Chasm Skulker

Whenever you draw a card, put a +1/+1 counter on this creature.
When this creature dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on this creature. (They can't be blocked as long as defending player controls an Island.)

Final Fantasy Commander

Pioneer Masters

Bloomburrow Commander

Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)

March of the Machine Commander

Commander Legends: Battle for Baldur's Gate

New Capenna Commander

First strike
Whenever a player casts a noncreature spell, they lose 2 life.

The List

Commander 2016

Magic 2015

Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.\r
When Chasm Skulker dies, put X 1/1 blue Squid creature tokens with islandwalk onto the battlefield, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)