Mister Fantastic

Fork one triggered ability into three. That is the piece of machinery hiding behind the four-color activation cost, and it is a genuine multiplier rather than a simple echo: point it at a storm trigger and one instance becomes a barrage, aim it at an enters-the-battlefield payoff and a single arrival cascades into a stack of three. The tap plus a red, green, white, and blue commitment is the constraint doing the balancing work here, because a mono-blue creature that demands a four-color base gates its own best trick behind how much fixing the pilot is willing to run. The quieter of the two abilities sets the deckbuilding brief: a card each combat provided you have already fired off something other than a creature that turn, which pulls the deck toward a spell-dense shell and away from a wide board. Reach and vigilance on a 2/4 body make it a stubborn defensive anchor: it holds up against fliers and keeps swinging without dropping its guard, so the engine keeps humming while it survives. Read together, the two abilities pay a spell-heavy multicolor pilot twice: once with a card as combat opens, and again by handing you a fork for whatever else your permanents are already triggering. Its ceiling is a direct function of how many triggers you can queue up to copy, and the copy-twice clause means every activation earns more than a plain duplicate would.