Deck courtesy of RussischerZar.
Basically stall the board as much as possible until you have at least one Celestial Omen and any two of Harsh Rule/Celestial Omen/A New Tomorrow (and hopefully a Workshop Forge or two). Then keep casting Celestial Omens to search for Celestial Omen until you filter everything out of your deck that doesn't have warp and isn't power.
Next, cast A New Tomorrow and next turn Harsh Rule into all the Warp cards that you can find on top of your library until your board is full again. Proceed to win, the achievement should trigger.