Delirium was also a core mechanic of the next set in this block, Eldritch Moon , which featured Emrakul's emergence into the plane and subsequent warping of the plane into a Lovecraftian horror: Since its original printing, Delirium has shown up as a mechanic in only a few other Magic sets, Modern Horizons 2 and 3 , and Duskmourn: House of Horror
Whispering of the Wilds and Map the Wastes are the main ramp cards and surprisingly, they are both very strong
The multiplayer environment of Commander (2011) brought in this new space to explore in being able to damage all players
Endless Detour If youre a Bant deck, you should be playing Endless Detour
Plus, you have artifact ramp available from Sol Ring, Arcane Signet, Talisman of Conviction, Talisman of Impulse, and Talisman of Unity