Hydroid Prime

For each "Level Up" counter on this creature this creature gets +1/+1 (Max "Level Up" counters is 5).

Exhaust - {6}{u/b}{u/b}{u/b}{t}: Create a 9/9 "Hydroid's Kraken" creature with "This creature enters tapped. When this creature enters the battlefield, create ten 1/1 Tentacle tokens. Creatures you control have Shroud. This creature shares "Level Up" counters with Hydroid Prime (only the one that created Hydroid's Kraken). When Hydroid Prime leaves the battlefield, exile Hydroid's Kraken and all