Once the ability is activated and the cost is paid, it's too late to stop the ability from being activated by trying to remove the creature card from the graveyard
If you don't, create a Treasure token.Whenever you cast a spell you don't own, put a +1/+1 counter on each Scout, Pirate, and Rogue you control
You'll want to finish performing the other two dredge/draws of Cathartic Reunion first, meaning you may find Prized Amalgam on the last dredge attempt and those will see the Narcomoeba from the first dredge come into play
These two stats determine damage and survivability when characters challenge one another during gameplay
This may seem a bit odd as each time you would draw a card you are instead filling up your graveyard with more and more cards
As you can see, you can +1 her to tap an opposing dork or artifact and it skips an untap step, which is nice and will let you force a foe to cast another dork to get past it