Gideon, the Oathsworn

The triggered ability is the load-bearing piece, not the loyalty menu. Most planeswalkers named Gideon have paid for their aggressive slant with a body that either becomes a beater or ticks up a passive anthem; this one rewards the attack step itself, dropping permanent +1/+1 counters on every non-Gideon attacker whenever two or more of them commit to combat. That reframes what the card is for: not a value engine that happens to swing, but a go-wide finisher whose engine runs entirely off the alpha strike you were already planning. The counters scale with the number of bodies rather than a single fixed line, so the payoff compounds each turn a wide board attacks. The +2 covers the flank, animating a 5/5 that shrugs off all damage for the turn (immune to burn and unfazed in the red zone) while the counters accrue everywhere else. The ultimate is a functional board wipe that spares your own creatures, the rare Gideon closer that answers a defensive stall rather than adding one more attacker to it. The self-exile on the minus is the discipline that keeps that reset honest: you surrender the planeswalker to clear the opposing side, a one-shot trade priced against the loyalty you climbed to reach it. Everything points one way, toward a shell that fields multiple bodies each turn; strip that structure away and you have a six-mana walker whose trigger goes dormant on an empty board and whose plus cannot even attack the turn it arrives.