Squid

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Bloomburrow Commander Tokens

March of the Machine Commander Tokens

Commander Legends: Battle for Baldur's Gate Tokens

New Capenna Commander Tokens

Commander 2016 Tokens

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.)

Coral Barrier

Defender (This creature can't attack.)
When Coral Barrier enters the battlefield, put a 1/1 blue Squid creature token with islandwalk onto the battlefield. (It can't be blocked as long as defending player controls an Island.)

Defender (This creature can't attack.)
When this creature enters, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.)