(2011-01-01) If the token isn't exiled when the delayed triggered ability resolves (due to Stifle, perhaps), it remains on the battlefield indefinitely
Emrakul, the Promised End was a great mythic addition to the Magic set that brought us delirium: it works a a solid delirium commander even if the card doesn't technically use the mechanic
If you dont know what your deck is trying to accomplish, you wont know what hands to keep, what to tutor for, or when to spend interaction
You could play a cheaper extra turn spell like Alrund's Epiphany in its place, or just go for a different option
Its not a Land
Some of the sorceries from the Face the Hydra deck might also work, as long as your group is willing to interpret the word Heads as creatures and think of the Chaos Deck as being the Hydra. For example, Unified Lunge would read, Unified Lunge deals X damage to each player, where X is the number of creatures on the battlefield. And Disorienting Glower could be interpreted as, Players cant cast spells until the next time a Chaos Deck card is played . Similarly, you could include some of the sorceries from the Battle the Horde deck by swapping out the word Minotaur for creature. Consuming Rage would then read, Whenever a creature attacks this turn, it gets +2/+0 until end of turn