They are played to your board using their ink cost
When Lilo quests, choose an Alien to gain Challenger +2 and can challenge ready characters for the turn
Pact of Negation Pact of Negation is often a last-ditch effort to stop somebody from winning the game, but its very effective as long as you can pay next turn
While the combo requires you to assemble at least three creatures including Yawgmoth, Thran Physician, there are enough cards to help with this task, namely Chord of Calling and Eldritch Evolution
-2: Target player draws two cards
This is arguably the most balanced deck on the entire list , with 11 instants or sorceries, 11 enchantments, and ten artifacts at your disposal