Nadir Kraken triggers, holding priority, activate Skirge Familiar by discarding a card, adding ({B} magic symbol) .
Resolve the Nadir Kraken trigger, causing you to pay ({1} magic symbol) to create a 1/1 Tentacle creature token and put a +1/+1 counter on Nadir Kraken.
The Tentacle enters the battlefield, triggering Trespasser's Curse, causing you to lose 1 life and gain 1 life.