Step 1: Vote up the Darwin's Theory tournament suggestion. Seems like it would be a blast.
Step 2: Profit.
The opposite of blob's tournament idea. Start with a team of fully evolved Pokemon. Go down a stage of evolution as you progress in the tournament.
Tournament specific rules:
-Stage 1 Pokemon are allowed for use right at the start.
-Basic Pokemon are not allowed at the start unless there is a baby Pokemon in their line.
-You must use your same team (well, besides them being devolved that is) throughout the entire tournament. Moves, EVs, items, etc can be changed.
Round 1: Typhlosion, Gyarados, Butterfree, Sunflora, Electivire, Snorlax
Round 2: Quilava, Magikarp, Metapod, Sunkern, Electabuzz, Munchlax
Semi-Finals: Cyndaquil, Magikarp, Caterpie, Sunkern, Elekid, Munchlax
Finals: Cyndaquil, Magikarp, Caterpie, Sunkern, Elekid, Munchlax
Bans will be put in place when the tournament page is posted.