Elemental Mascot (SOS)

Creature — Elemental Bird

Flying, vigilance Opus — Whenever you cast an instant or sorcery spell, this creature gets +1/+0 until end of turn. If five or more mana was spent to cast that spell, exile the top card of your library. You may play that card until the end of your next turn.

Niche tempo creature for UR spellslinger decks, but the card advantage engine requires heavy mana investment and the body itself is fragile without consistent spell support to justify the deck slot.

Secrets of Strixhaven — Common