Knight of Old Benalia (17) [Modern Horizons]

Suspend 5—{W} (Rather than cast this card from your hand, you may pay {W} and exile it with five 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.) When this creature enters, other creatures you control get +1/+1 until end of turn.