First, Shay ensures each creature you target can't be protected, and since it targets six individual creatures, it creates six bounty counters and gives Shay 12 +1/+1 counters
Cards that provide net resource disadvantage - say, Small World, for instance - don't have any legitimacy in Endymion, as they are too costly
As this card remains in the graveyard, it provides battle protection from your Chao monsters due to it only being accessible once you finish a level from the games
Meanwhile, CGC's Standard tier remains around $25 per card with no membership requirement
that target is unaffected by card effects this turn, except its own, and if you have 3 or more Spells in your GY, it cannot be destroyed by battle this turn