Animar, Tortured Soul

Monocolored spells that target Animar cost {x} more to cast where X is half the number of colorless creatures you control, rounded down.
Annihilator 1, Devoid (This card has no color.)
Animar, Tortured Soul gets +1/+1 for each
other colorless creature you control.
Eldrazi creature tokens you control get +1/+1.