This game is being overran with a growing issue I blame on Reddit hackers sharing how to manipulate code in arena. Such hacks as: mana cost manipulation, stack manipulation, phase manipulation.

Mana cost manipulation is when a player without spell or ability is playing a higher mana cost card for less. This is probably the least common thus far I have experienced.

Stack manipulation is when stack order of spells played is being adjusted in favor of the hacker, moving a spell on the stack to bypass a counter spell, or putting a debuff on before a opposing players buff. Ex. 2/2 creature swinging and gets no block as return so non hacker plays +4+4 onto creature but hacking player uses a response to that and gives -2-2. On the stack the +4+4 is first but applies the -2-2 first destroying creature and fizzles the spell of +4+4.

Phase manipulation is when the hacker bypasses a block or attack phase of opposing player, adds a unjustified mana cost like a common tax enchantment without owning such enchantment or ability. This is the fastest growing hack I have seen.

MTG has yet to respond or remove players hacking as I continue to see them, I fill friends list of names of players doing such hacks and have maxed out friends list now. I urge the community against hackers to do the same and continue to report hackers till MTG fixes the coding to not allow these back door manipulations to continue.