Papyrus

+2: If an opponenet controls a human creature card, give them a Puzzle artifact that says Before yor next turn solve a puzzle, otherwise lose turn.
-4: All skeletons become defenders with a base of 10 defense but 4 attack.
-10: Exile all humans, including the all opponenets,take an extra turn. After that turn all humans may come back,even the player.