[BURN 3]. (Put the top 3 cards of your Main Deck into your trash.)
Play a 0 Might Shadow Clone unit token. (It has "When I attack, you may banish a unit from your trash. If you do, give me [ASSAULT 4] this turn.")
[FLOW] 1 and 2 Runes (You may play this from your trash for its Flow cost. Then banish it.)