Knight of Old Benalia is a common Creature — Human Knight card from The List (PLST), collector number MH1-17. Current market price: $0.40, TCGplayer market prices via Scryfall.
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.