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It's a decently costed removal spell and one that can handle various kinds of permanents in a way that red is best at

Terra gains flying until the end of turn

Arbor Elf Arwen, Weaver of Hope Crdan the Shipwright Elrond of the White Council Elvish Archdruid Elvish Harbinger Elvish Mystic Elvish Piper Elvish Visionary Elvish Warmaster Erestor of the Council Essence Warden Farhaven Elf Galadhrim Brigade Galadriel, Elven-Queen Galadriel, Light of Valinor Haldir, Lrien Lieutenant Legolas Greenleaf Mirkwood Trapper Paradise Druid Realm Seekers Reclamation Sage Tireless Provisioner Wood Elves

Their own Level 10 Slime monsters that search out a Spell/Trap card related to them could be a good start, but they'll need different Special Summoning conditions to differentiate them from Guardian Slime

WC G-Max Spiral 70+ You may put an Energy attached to this Pokmon into your hand