Aquatics NCS Card

(Gain the next level as a sorcery to add its ability.)

Whenever a creature enters the battlefield under
your control from exile, put a +1/+1 counter on it.
{3}{u} — Level 1 — At the beginning of your end
step, target creature you control dives.
{3}{u}{u}{u}{u} — Level 2 {line} Whenever a creature
you control becomes the target of a spell or ability an opponent controls, it dives.