The two main considerations for removal are the range and the effectiveness
Multiple mythics are already preselling for almost $20 each, and a couple of them look poised to slot into the respective tier decks without blinking
Krenko is a 2RR creature with a 3/3 statline, and an ability as simple as it is dangerous: tapping Krenko creates X 1/1 red Goblin creature tokens, where X is the number of Goblins that the player controls
No creature that has a color can block it, making it a guaranteed hit of four damage every turn
Commander / EDH / Prison MTG Decks A prison deck functions by locking your opponent out of the ability to play in certain ways using cards and combinations to halt creatures activated abilities, ability to attack, the casting of spells, mana, etc in effect locking your opponent out of the game
In the meantime Ive come up with other deck themes Id like to do