Delve (Each card you exile from your graveyard while casting this spell pays for .)
Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Willbender is turned face up, change the target of target spell or ability with a single target.

Whenever a creature an opponent controls becomes the target of a spell or ability you control, gain control of that creature for as long as you control Willbreaker.

Flying
: Target creature gains flying until end of turn.

Flying

One or two target creatures gain flying until end of turn.

Flying
Menace (This creature can't be blocked except by two or more creatures.)

Flash
Flying

Enchant land
Enchanted land is a 2/2 blue Elemental creature with flying. It's still a land.
When enchanted land dies, return that card to its owner's hand.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)
Flying

Flying
Creatures can't attack you unless their controller pays for each creature they control that's attacking you.

Two target creatures you control each get +2/+2 and gain flying until end of turn.

Hideaway (This land enters the battlefield tapped. When it does, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library.)
: Add .
, : You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.

Flying
Attacking creatures you control have lifelink.

Flying
Cycling (, Discard this card: Draw a card.)
When you cycle Windcaller Aven, target creature gains flying until end of turn.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

: Add .
, : You may cast creature spells this turn as though they had flash.

Flying
Whenever a creature with flying attacks, you may draw a card.

Flying
: Windreaver gains vigilance until end of turn.
: Windreaver gets +0/+1 until end of turn.
: Switch Windreaver's power and toughness until end of turn.
: Return Windreaver to its owner's hand.