Roiling Regrowth is the safer version with a lower floor, and Entish Restoration has upside if you control a large creature
Growth Value TODAY YESTERDAY (0%) 1 WEEK (0%) 1 MONTH (2400%) Unlock the potential of your card collection
They open up design and player decision-making in a way that a morph of early versions of the planeswalker idea, sagas, dont, since they take the basic planeswalker idea and give it turn-based gating
Examples of cards with which you can win in battle

Academy Loremaster Advanced Reconstruction Alabaster Leech Andradite Leech Anointed Peacekeeper Arachne, Psionic Weaver Aura of Silence Aven Interrupter Because I Have Willed It Boreal Elemental Callaphe, Beloved of the Sea Captain Eberhart Case of the Ransacked Lab Charitable Levy Charix, the Raging Isle Chatzuk, Mighty Guitarist (playtest) Chill Curse of Silence Defense Grid Derelor Disruptor Flute Dovin, Hand of Control Elderwood Scion Elspeth Conquers Death Emet-Selch of the Third Seat Esior, Wardwing Familiar Eureka Exiled Doomsayer Feroz's Ban Finale of Promise Fires of Invention Geist-Fueled Scarecrow Gloom Glowrider God-Pharaoh's Statue Gonti, Canny Acquisitor Gran-Gran Grand Arbiter Augustin IV High Seas Hinata, Dawn-Crowned Icefall Regent Irini Sengir Jade Leech Jubilant Skybonder Kaervek's Torch Kasmina, Enigmatic Mentor Killian, Ink Duelist Kopala, Warden of Waves Krallenhorde Howler Krosan Drover Loan Shark Lodestone Golem Lyse Hext Mindbreak Trap Monastery Siege Nogi, Draco-Zealot Paladin Class Primal Amulet Pursued Whale Reidane, God of the Worthy Rowan, Scholar of Sparks Ruby Leech Sapphire Leech Sphere of Resistance Sphinx of New Prahv Squeeze Syr Elenora, the Discerning Talent of the Telepath Tax Collector Thalia, Guardian of Thraben The Earth Crystal The Ur-Dragon

If the number of differently named lands you control changes while activating mana abilities (probably because you sacrificed one or more lands), the cost to activate the ability remains what you previously determined