The Wind Crystal

White spells you cast cost {1} less to cast. If you would gain life, you gain twice that much life instead. {4}{W}{W}, {T}: Creatures you control gain flying and lifelink until end of turn.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o518z2k61pb1hj2tp8u6f.