These cards all interact, to additionally multiply token production from 2x to 4x and beyond, so critical mass is a good way to end the game in combination with your drain effects
COLORLESS Academy Manufactor Academy Manufactor is absurdly good token producing, reinforcing the overlap between the artifact tokens Clue, Food, and Treasure
Blue has most of the direct card draw, all the good counter magic, most of the good card quality spells and is usually first in line to get interesting and different new spells
Legendary Creature - Eldrazi Removal (CTRL to add secondary) Tokens Idol of False Gods , : Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add ." Whenever another Eldrazi you control dies, put a +1/+1 counter on this artifact
Then the Rings tempts you
Three Steps Ahead A three mana MTG counterspell is distinctly unimpressive, but with a clone and a draw spell bolted on top, it gets a lot more promising