As an additional cost to cast this spell, sacrifice a creature.
You gain life equal to the sacrificed creature's toughness. Destroy target creature an opponent controls.

When this enchantment enters, you get (four energy counters).
Pay : Prevent all damage that would be dealt to you this turn by a source of your choice.

Whenever a player casts a red spell, you may gain 1 life.

: Exile this creature, then return it to the battlefield face down under its owner's control.
: This creature gets +1/-1 or -1/+1 until end of turn.
Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Flash
Natural Shelter — When this creature enters, you may return another permanent you control to its owner's hand.

Choose another player. Look at that player's hand and choose a card other than a basic land card from it. They discard that card. At the beginning of the first upkeep in your next game with that player, look at that player's hand and choose a card other than a basic land card from it. They discard that card.

Menace
Whenever a nontoken Knight you control dies, each opponent loses 1 life and you draw a card.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Put a flying counter on it. It's a Spirit in addition to its other types.

This creature can't block.

At the beginning of combat on your turn, put a +1/+1 counter on target creature.
Whenever this creature attacks while saddled, double the number of +1/+1 counters on target creature.
Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

: This creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

Flying
At the beginning of your upkeep, this creature deals 1 damage to you.

This creature can't be blocked if you've cast a historic spell this turn. (Artifacts, legendaries, and Sagas are historic.)

Whenever Kellan attacks, reveal the top card of your library. If it's a creature card with mana value 3 or less, put it into your hand. Otherwise, you may put it into your graveyard.

Haste (This creature can attack and as soon as it comes under your control.)

As an additional cost to cast this spell, you may exile any number of green cards from your hand. This spell costs less to cast for each card exiled this way.
Choose target creature with mana value less than X. Search your library for a creature card with the same name as that creature, put it onto the battlefield tapped, then shuffle.

Flying
When this creature enters, you gain 2 life and draw two cards.