It does synergize with some of the discard payoffs we have seen like Chernabog - Evildoer and Sheriff of Nottingham - Corrupt Official, so it has that going for it
Many cards have Shift or abilities that rely on certain types and numbers of characters being in play (we're looking at you, Seven Dwarfs)
Atarka, World Render Atarka, World Render has one main use: Win via commander damage
Gishath, Sun's Avatar Gishath, Sun's Avatar is the ultimate dinosaur MTG commander, and the guy you want to go to first if you're trying to play dinosaurs in EDH
The game involves casting spells and using creatures to attack your opponent but players can only gain those abilities from collecting a big variety of cards
Even if your opponent has a way to deal with Skithiryx, you can pay double black mana to regenerate it and keep it around to terrorize the battlefield