Espeon

Damage dealt by Espon is increased by the
number of +1/+1 counters on it.
{w/b}, Pay X life: Change the target of target spell or
ability with mana value X that targets you or a
creature you control.
{t}{w/b}{w/b}{w/b}: Deal 5 damage to target creature.
{t}{x}{w/b}: Prevent the next X damage that would
be dealt to you or a creature you control.
{t}{1}{w/b}{w/b}: Put a +1/+1 counter on Espeon.