The following cards on gatherer have typos or templating issues:

Blood Burgler
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=466842&printed=false
Current text: lifelink.(Damage
Expected text: lifelink. (Damage
Reason: General grammar. Missing space after a period.

Torment of Venom
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=430768&printed=false
Current text: unless they sacrifice another nonland permanent or discards a card
Expected text: unless they sacrifice another nonland permanent or discard a card
Reason: General grammar. The word "discards" should be "discard". When the massive "he or she sacrifices a .." -> "they sacrifice a ..." update went through the find/replace didn't catch the "discard a card" section of the sentence.

Netherborn Phalanx
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=455909&printed=false
Current text: then then shuffle
Expected text: then shuffle
Reason: General grammar. The word "then" is printed an additional time in the reminder text.

Henzie "Toolbox" Torre
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=559654&printed=false
Current text: If you do it
Expected text: If you do, it
Reason: General grammar. There should be a comma after the word do inside in the reminder text.

Scared Stiff
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=580660&printed=false
Current text: menace as long you
Expected text: menace as long as you
Reason: General grammar. Missing word. There should be an "as" between "long" and "you".

The Pyramid of Mars
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=634275&printed=false
Current text: and at beginning
Expected text: and at the beginning
Reason: General grammar. Missing word. The word "the" should be between "at" and "beginning".

Tempt with Bunnies
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=671130&printed=false
Current text: Tempting Offer
Expected text: Tempting offer
Reason: Consistency. "Offer" should be lowercase, "offer" to match other cards that have "Tempting offer" as an ability word.

Call a Surprise Witness
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=646570&printed=false
Current text: battlefield. Put a flying counter on it. It's a Spirit in addition to its other types.
Expected text: battlefield. It's a Spirit in addition to its other types. Put a flying counter on it.
Reason: Magic templating issue. The enter modifier (making it a spirit) should occur before putting a counter on it, especially if it's not entering-with a counter, but getting the counter after it's on the battlefield.

Plane-Merge Elf (1) and Prophecy (2)
Link (1): https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=476212&printed=false
Link (2): https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=3023&printed=false
Current text: Reveal the top card of target opponent's library. If it's a land,
Expected text: Reveal the top card of target opponent's library. If it's a land card,
Reason: Magic templating issue. Any time you refer to a card in a library, it needs to have the word "card" next to it. The top card of a library is never a "land", since it's in the library and not a permanent. But it is a "land card".

Hand of Emrakul (1) and Elder Spawn (2)
Link (1): https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=193616&printed=false
Link (2): https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=1478&printed=false
Current text (1): You may sacrifice four Eldrazi Spawn rather than
Expected text (1): You may sacrifice four Eldrazi Spawn permanents rather than
Current text (2): Elder Spawn can't be blocked by red creatures.
Expected text (2): This creature can't be blocked by red creatures.
Reason:
This one is subtle. 'Elder' (plural 'Elders') is a creature type, and 'Spawn' (plural 'Spawn') is a creature type. So the "can't be blocked" rule on Elder Spawn is ambiguious.
It could be interpreted as "This creature can't be blocked..." or it could be interpreted as "Human Wizards can't be blocked..." (referring to the creature types, replaced Elder with Human and Wizards for Spawn for clarity of example).
I suggest updating Elder Spawn to use the new "This creature" wording, or specifying that 'Spawns' is the plural of 'Spawn', and updating Hand of Emrakul to "four Eldrazi Spawns" or "four Eldrazi Spawn permanents".

Seshiro the Anointed Avatar
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=182288&printed=false
Current text: At the beginning of the game, choose a creature type. Creatures you control
Expected text: At the beginning of the game, choose a creature type.<ENTER>Creatures you control
Reason: Magic templating issue. There should be an enter between the beginning of the game trigger, and the static effect.

Balthor the Defiled
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=20842&printed=false
Current text: returns all black and all red creature cards
Expected text: returns all black and/or red creature cards
Reason: Magic templating issue. Each sub-clause should have the word card (all black creature cards and all red creature cards - matching "all CARDS and all CARDS"), or the sub-clauses should be joined (all black and/or red creature cards - matching "all CARDS"). "all black" on it's own doesn't make sense.

Unglued Pea-Brained Dinosaur
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=583582&printed=false
Current text: {TK}{TK} - {T}: Add {2}. Spend
Expected text: {TK}{TK} - {T}: Add {C}{C}. Spend
Reason: Rules / templating consistency. No other cards add {2}. This was fixed on Happy Dead Squirrel, but Unglued Pea-Brained Dinosaur missed the fix.

Oracle en-Vec
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=4889&printed=false
Current text: At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn
Expected text: At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack that turn
Reason: Magic templating and clarity. Using "this turn" to refer to something that happened during a player's next turn is super-confusing. By default, I'd assume it meant the creatures that didn't attack when Oracle en-Vec's ability was activated, not the turn when the delayed trigger goes off.

Sensei Golden-Tail
Link: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=78683&printed=false
Current text: Put a training counter on target
Expected text: Put a FBLTHP counter on target
Reason: Now that 'training' is a keyword and there are ability counters, rename the old counter type to prevent confusion. I used Fblthp as a filler word. Feel free to choose a new flavorful counter type.