Iroas, God of Victory

The God cycle from this era treats devotion as a defensive gate: the enchantment hides as a noncreature until enough colored pips commit to the board, then stands up as a hard-to-kill body. This one inverts the exchange. The devotion clause is identical, but the two static abilities pay off the instant Iroas resolves, regardless of whether the 7/4 ever becomes a creature. Menace across your whole team plus total damage prevention for attackers make combat a one-sided proposition: your creatures swing through chump blocks and come back untouched, so defenders must double up or take it, and even a double block kills nothing. That value lands well before devotion to red and white reaches seven and the indestructible body enters the fight. It is an aggro engine dressed as a finisher. The tension is deliberate: the harder you flood the board to warp combat, the faster you build the devotion that animates the God, so the halves feed each other. Once it is a creature, indestructibility neutralizes conventional removal, and the prevention shield covers your army during the phase they are most exposed. As a top-end payoff, it does not ask you to shepherd a single fragile threat: it rewards a wide board and turns attacking into the safest move on the table, the kind of Boros engine that makes swinging feel free.