Ral, Storm Conduit
Two words in the passive ability carry the whole design: cast or copy. Every instant or sorcery you cast pings an opponent, but so does every copy, and that second trigger quietly turns a spellslinger value engine into a combo detonator. Point the minus at a spell that copies other spells and the counter starts feeding itself: each copy is another cast-or-copy event, another point of damage, and if the copy loop is infinite so is the burn. That is the tension this kind of walker lives inside. Burn-oriented planeswalkers usually deal their damage from a loyalty-costed activated ability with a once-per-turn ceiling; here the damage is passive and unbounded, gated only by how many spells you can chain before the turn ends. The plus is deliberately quiet, a scry that keeps loyalty climbing while you assemble the pieces, and the minus arms your next spell to fork itself in the manner of a Twincast bolted onto a superfriends shell. What makes it genuinely dangerous is that it never asks you to attack, block, or ultimate: the win condition is loyalty-agnostic, sitting on the battlefield and converting a fistful of cheap instants and sorceries into direct damage. Its ceiling is drawn not by any number printed on the card but by the copy effects you surround it with.
