night witch, bat caller

summon 2 (create 2 black 1/1 bats with flying
every tap step) swamp walk, hexproof, kicker:{u}{b}
if card was kicked summon 1
(create 1 black 1/1 bat with flying every tap step)
{t}{u}{b}{x}: create {x} amount of black 1/1 bats with flying
where {x} is the mana used in this ability
-"fly my pretties"