Axolotl Warrior

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
If Axolotl Warrior would be dealt damage, for each +1/+1 counter on Axolotl Warrior, prevent 1 of that damage and remove that counter.
"It's a wonder the Simic waited this long to create it."
—Vernick, Boros Tactician