So sit back, draw cards, and let your big-bodied creatures run through your opponents defenses
Theres also the possibility that the mana will be good enough that people will often want to play more than two colors, and Mana Confluence would shine in that world as well
Junji is there mostly for the trigger, though, not the beats
If you cast a card for its prototype cost, it'll have the second set of characteristics both as a spell and as a permanent on the battlefield
Find your path through the multiverse using only favorite characters and their most iconic spells and artifacts, or create a theme deck with a narrative that makes sense only to you
If you have a creature with 4+ power you get a [[Force Spike]] (not the best card but always fun when you can get your opponents)