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.)
Near Mint - $1.20
Lightly Played - $1.10
Played - $0.90
Heavily Played - $0.80
Damaged - $0.60
Near Mint Non-English - $1.20
Lightly Played Non-English - $1.10
Played Non-English - $0.90
Heavily Played Non-English - $0.80
Damaged Non-English - $0.60