Wilderness ReclamationrampBudget$0.52Gives a similar “untap on each opponent’s turn” effect by untapping your lands at end step, enabling repeated mana use across the table.
Quest for RenewalutilityBudget$5.77Provides a multiplayer untap engine for your creatures, letting you reuse tap abilities and attackers on each opponent’s turn.
VitalizeutilityBudget$1.05A budget one-shot version of the same idea, untapping all your creatures for another round of attacks or activations.
Benefactor's Draughtutility$13.02Untaps all creatures and can also cantrip, making it a strong tempo/combat analogue to repeated untap synergies.
SeedtimeutilityBudget$4.17Not an untap effect itself, but it similarly rewards opponents’ turns in green and is often paired with Seedborn-style play patterns.
Ley WeaverrampBudget$0.34Can repeatedly untap lands for extra mana, functioning as a green engine piece for multi-turn resource generation.
Drumbellowerutility$13.19Untaps all creatures you control during each other player's untap step, making it one of the closest functional replacements to Seedborn Muse.
AwakeningutilityBudget$5.90A global untap engine that affects all players, giving repeated activations and mana on every turn at the cost of symmetry.