Urza, Planeswalker

The double-activation rider is the whole design conceit, and it reframes every number on the card. A planeswalker that ticks twice a turn stops behaving like a planeswalker in the conventional sense; it is a loyalty engine that runs two of its five abilities every turn, banking loyalty faster than a single attacker can drain it. That changes how you read the individual lines. The +1 draw-two-discard-one becomes card advantage you can pair with a second ability the same turn, and the −3 exile turns into a repeatable removal button rather than a one-time answer, because the two upticks (+2 and +1) keep the pool topped up faster than a −3 spends it down. Stack the +2 cost reducer with the 0 token line and you are both cheapening your next artifact deployment and defending Urza with fresh blockers in one turn cycle, all without touching the loyalty you are saving for the −10. That ultimate signals the intent plainly: a board wipe that leaves your own artifacts and planeswalkers standing is a closer, not a stabilizer, and the doubled cadence means it arrives startlingly fast. This is a melded permanent rather than a hardcast spell, which fits the character: the historical Urza has been rendered as a creature and as an artifact-value piece before, and casting him as a walker whose signature trait is doing everything twice is a fitting translation of someone defined by outbuilding opponents rather than outracing them.