You're only interested in playing the most powerful tribes You'd prefer a Combo or Control deck You want to cast a lot of noncreature spells Combat doesn't interest you You're more of a Cat person Stick To Gruul Vs
The instant speed Return will only work on non-Humans but it can pump them as a combat trick to save them or to kill out of nowhere
While it can still deal damage the same way its purely Goblin counterpart can, it can also ramp out even bigger Eldrazi thanks to the tokens it produces, 0/1 Eldrazi Spawn that can be sacrificed to produce a colorless mana
Poor scaling as opponents develop boards and can choose to sac off a weak thing and restrictions on your own build in that you don't want to put yourself in a position to sac off a relevant thing of your own
Of course, Im certainly no pro, and I generally dont play the Modern format that this set is largely designed around, so I cant speak to the exact power level of the individual cards here without inevitably making a fool of myself
Once played, you hand out Rad Counters to all players, then create 2/2 black Zombie Mutant Creature Tokens for all those Rad Counters