Balduvian Hydra
{X}{R}{R}
Creature -- Hydra
0/1
~this~ enters with X +1/+0 counters on it.
Remove a +1/+0 counter from ~this~: Prevent the next 1 damage that would be dealt to it this turn.
{R}{R}{R}: Put a +1/+0 counter on ~this~. Activate only during your upkeep.