Knight of the Keep

This spell costs 2 less to cast if it targets a tapped creature. Exile target creature.

Destroy all creatures with power 3 or greater. Then create a Food token for each creature you control. (It's an artifact with "2, T, Sacrifice this token: You gain 3 life.")

When Bill the Pony enters, create two Food tokens. (They're artifacts with "2, T, Sacrifice this token: You gain 3 life.") Sacrifice a Food: Until end of turn, target creature you control assigns combat damage equal to its toughness rather than its power.

Vigilance Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. Sacrifice Boromir: Creatures you control gain indestructible until end of turn. The Ring tempts you.

This enchantment enters with a hope counter on it for each creature you control. At the beginning of your end step, remove a hope counter from this enchantment. If you do, draw a card. Then if this enchantment has no hope counters on it, sacrifice it and you gain 4 life.

Equipped creature gets +2/+1. Equip Human 1 Equip 3 (3: Attach to target creature you control. Equip only as a sorcery.)

Flying When this creature enters, creatures you control get +1/+0 and gain first strike until end of turn. Plainscycling 1 (1, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

When this creature enters, create a Food token. When you do, target creature you control gets +1/+1 until end of turn for each Food you control. (A Food token is an artifact with "2, T, Sacrifice this token: You gain 3 life.")