You can only use each effect of "Mutiny in the Sky" once per turn
If it's a creature card, it can be turned face up any time for its mana cost.) Creature Enchantment - Nightmare Fear of Sleep Paralysis Flying Eerie Whenever this creature or another enchantment you control enters and whenever you fully unlock a Room, tap up to one target creature and put a stun counter on it
Duking it out with a group of friends, using massive decks with cards from all across the game's history, is a whole lot of fun
Similarly, green-white and green-black (combined!) dont match up to the number of white-black decks
Sacrificing one creature wont do much, but it starts to add up and out-value your opponents if you have plenty of benefits through cards like Dictate of Erebos or Desecrated Tomb
This is easily the best possible outcome, as it treats the card as every card should be: a game piece with pretty art, rather than a cheque