Voltaic Visionary // Volt-Charged Berserker

Colorless impulse draw with a self-destruct wired into the engine. The tap resolves at sorcery speed, deals two damage to you, and exiles the top card for the turn only, the sort of card-advantage engine that lets an aggressive deck stay ahead without playing blue. What makes the design tick is that the engine is single-use by construction. Every activation is a fresh top-of-library exile, and anything you don't cash in that turn is gone: you cannot stockpile fuel, so each tap is a discrete gamble on what sits on top. The moment you actually play an exiled card, the mandatory trigger flips the Visionary into the Volt-Charged Berserker, and the digging stops for good. So the real decision is not whether to keep grinding (you can't for long) but how many times to tap without playing before you commit, since the first payoff you take is also the last. That transform is not a bonus riding on top of a value creature; it is the toll for taking the value at all. Before the flip you have a patient 3/1 that wants to sit back and dig; after it, a body that has surrendered defense entirely and can't block. The swap turns a two-mana body into a timing puzzle: every activation is either the one where you spend the engine or one more increment of self-inflicted damage spent looking for the card worth ending it on.