I had Faithless Looting in the graveyard. I cast Past in Flames, which gave Faithless Looting another flashback ability. Then I cast a few more spells, some of which made mana. I had 3 red mana in my mana pool. When I clicked on Faithless Looting in my graveyard intending to use its R flashback cost, all of my mana was used up as the game had automatically used the original 2R flashback cost.

I had a Laelia, the Blade Reforged on the battlefield. My opponent casted solitude to exile it but I did not gain life

When Liege of the Hollows is a token, the death trigger does not appear to work correctly, as no squirrels were created.

During deckbuilding, Kaheera shows as 'This creature can be this deck's companion' while I have Grist in the main deck.

This is incorrect according to rule 113.6C; this interaction is explicitly stated in the Modern Horizons 2 Comprehensive Rules Changes.

1. Put Kaya's ghostform on commander (Muldrotha)
2. Muldrotha dies
3. Card doesn't trigger and Muldrotha goes to GY when I hit "no" on the command zone prompt. Please fix this!!

I played the Suspicious Stowaway card. Multiple times it should have turned from day to night but it didn't.

I had wanted to exile the Desecrator to itself, but was not able to because it says "another," BUT encountered a second problem - the option to exile a card for the Desecrator's ability said "exile a card from YOUR graveyard" rather than allow me to target my opponent's graveyard

When using necromancy on Tovolar's Huntmaster it come off when it enters the battlefield making it harder to kill.

1. Opponent Cast a Parallax Wave

2. Opponent exile my Sun Titan

3. he sacrificed Parallax Wave

Actual Results: Sun Titan didn´t return to the battlefield

Expected Results: sun Titan Should return to the battlefield

Opponent played Valki and couldn't select my zealous conscripts in hand

i put a counter on EE but when it enters to the battlefield has no cvounters

search Tolvar's Huntmaster with Finale of Devastation where x =6. Huntmaster will enter the battlefield but its enter the battlefield effect will not trigger. No wolves will be made.

Whenever Skullbriar, the walking grave dies the game crashes.
Maybe because the counters on it in the commander zone.

I was playing Vintage cube and was trying to cast ebondeath draco lich at the end of my opponents turn. I had discarded ebondeath the turn before and so should be able to cast it on my opponent's turn as it has flash and can be cast from my graveyard.

Dress down invalidates totem armor. Totem armor is the ability of the aura, not the creature. Fatal push and unholy heat have both destroyed creatures enchanted by hyena umbra with dress down in play.

Pia's Revolution does not deal damage to the target opponent if they choose to put the artifact into the graveyard instead of back into the owner's hand this happened during multiple games.

opponent targeted my hall of the storm giants when animated with a field of ruin and was not required to pay the ward cost.

My opponent has Devoted Druid in battlefield, nothing on stack, he did 3 mana with it, nothing was on battlefield, then he cast 2 drop at 3 cost of mana and devoted druid has only 2 counters on it instead of 3 and it is not dead.

Opponent goes through to main phase with a mindslaver in the graveyard.
Opponent uses academy ruins to put mind slaver back on top of deck during mainphase
Opponent casts mindslaver from top of deck without any way to have legally done so or having drawn it into hand to cast

I cast Avenger of Zendikar making 3 plant tokens. I attack with Avenger and three tokens, one just disappears.