Arboria
World Enchantment (CMC 4)
Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn.
Decks with Arboria
[DMR] Dominaria Remastered #149 (R)
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[DMR] Dominaria Remastered #335 (R)
[DMR] Dominaria Remastered #438 (R)
[LEG] Legends #174 (U)
[ME3] Masters Edition III #113 (R)