"The Night Calls" (playtest)

Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for
{1} or one mana of that creature's color.)
Buyback {3} (You may pay an additional {3} as you
cast this spell. If the buyback cost was paid, put this
spell into its owner's hand instead of into that player's
graveyard as it resolves.)
Create a 1/1 white Vampire token with lifelink.
It gets +2/+0 and haste until end of turn.