This rewards you with life for destroying opposing creatures, which can help keep you alive
2 Mike, the Dungeon Master Mike, the Dungeon Master is a 2/2 human that costs one generic, one green, and one white, and he is an absolute powerhouse You can pay two generic mana and tap Mike to return a creature that was put into your graveyard this turn straight onto the battlefield
That moment alone sells it
There are counters you dont want on your creatures, such as the -1/-1s that creatures with persist get
Theres no rules text or flavor text at all
Its definitely a build-around me sort of thing, and if wed like we can play games with Grim Haruspex (not a bad deal either, as a 3-power attacker for 3)