Infiltrator il-Kor

Shadow (This creature can block or be blocked by only creatures with shadow.) Suspend 2—{1}{U} (Rather than cast this card from your hand, you may pay {1}{U} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its

mana cost. It has haste.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oc8eb8exvpb1hb7idn11a.