Kirk Langstrom, Man-Bat

{t}: draw a card, you may lose 1 life and
put a mutate counter on target creature,
otherwise, remove a mutate counter from each
creature you control, those creatures loses all
abilities and become 4/4 creatures with flying,
fear and lifelink and is a black bat mutant in
addition to its other colors and types until the
end of the turn if it has it has no mutate
counters on it.
Forced under duress to make monsters, he is still
somehow entranced by his experiments.