From experience though this deck should be reserved for high-powered games as it'll often stomp low-power tables
Most evilly (and boring, in my opinion), you can combine Squirrels with Opposition
These cards all have cant attack printed somewhere in their text
Emrakul, the Promised End, Emrakul, the Aeons Torn, Trinisphere (Fallout Vault Boy), and All Is Dust all posted meaningful gains as well
There are half a dozen cards that fast-forward your turn from any spot right to the start of your cleanup phase (and therefore skip the end step that comes right before): Time Stop Discontinuity Glorious End Sundial of the Infinite Day's Undoing Obeka, Brute Chronologist Notice that you can use Time Stop, Discontinuity and Glorious End during your opponents' turns, too