Benefactor's Draughtutility$13.02Untaps all creatures you control like Vitalize, and can also draw cards in combat-heavy turns. It is a stronger but less cheap version of the same effect.
Mobilizeutility$6.00A very close functional equivalent that untaps all creatures you control at instant speed. It serves the same combat-trick and mana-reuse role.
Seedborn Museutility$11.89Not an instant, but it repeatedly untaps your permanents on each other player's turn, providing a much stronger version of the untap-for-value game plan.
Early Harvestramp$2.00Untaps all basic lands you control rather than creatures, but it fills a similar green tempo-reuse role for mana generation.
Drumbellowerutility$13.19Provides ongoing untaps for creatures you control on each other player's turn, echoing the same utility of reusing tapped creatures.
Hidden StringsutilityBudget$0.39Can untap creatures or lands you control and is often used for mana and combat tricks, similar to Vitalize's tempo-oriented role.
Toils of Night and DayutilityBudget$0.18Targets permanents including creatures, allowing repeated untaps as a flexible combo piece. It is more expensive but can serve a similar role in green-based value decks.
Nature's Willramp$8.91Untaps your lands when your creatures connect, enabling a related combat-to-mana conversion plan. It plays similarly in creature-based green decks, though it is much slower.