You can either make a 2/2 White Cat Beast token, which is nice but not what were going for, or you can put a +1/+1 counter on each Creature you control and then those Creatures gain vigilance until end of turn
The 1st Edition and Shadowless versions are the most valuable, so prioritize these when building your collection
He also has another, highly thematic ability, which allows him to heal another character one point of damage for the cost of two ink
701.26d If a spell or ability instructs a player to transform a permanent, and the face that permanent would transform into is represented by an instant or sorcery card face, nothing happens
Theyre a unique collection of creatures that each act as hivemind, giving each other sliver a buff (usually in the form of a keyword ability)
It flips a card face down onto the table as a 2/2, and you can unmorph it if its a creature