The ability to replace itself is a popular design choice in the game of Disney Lorcana, a game in which card advantage is king
It gets better if you have prowess creatures or ways to take advantage of noncreature spells
You can even attack at will with your goblins since theyll do at least 1 point of damage, alive or dead
The neat thing about Rat Colony though, is that it doesnt force you to only use other cards with the same name, you can fit twenty of them into a Rat-themed Commander deck and not have to worry about not having enough other copies of it
Creature - Human Wizard Color tag templates(None) Ulamog, the Ceaseless Hunger When you cast this spell, exile two target permanents
Firkraag, Cunning Instigator Welcome back to Blue and red again too, by the by