Unown (W)

Flying.
Elemental Avatar Wizard creatures you control have "{1}, {t}: Sacrifice any number of untapped Elemental Avatar Wizard creatures you control, you may cast a card you own with converted mana cost X or less, from outside the game or in exile. X is the number of Elemental Avatar Wizard creatures sacrificed this way."
Cycling {p/c} ({p/c}, Discard this card: Draw a card.)