Origin of Captain America

Three chapters that each hand the next a slightly better board than they inherited. Chapter I is a combat buff: a +1/+1 counter plus first strike and vigilance for the turn, best pointed at a creature already swinging so the temporary keywords do not evaporate unused. Chapter II is where the Saga does something structurally unusual for its type: it leaves behind Sturdy Shield, an Equipment token that outlives the enchantment entirely. Most Sagas spend their triggers and vanish, but this one converts a piece of itself into a permanent before it sacrifices, so a creature buffed on Chapter I can wear a durable +1/+2 long after the story finishes. Chapter III is the tempo cap, tapping and stun-countering a blocker or threat to clear the lane for the board you have been assembling over the previous two turns. The through-line is that this is an aggression piece dressed as a narrative enchantment: it wants a creature on the table before the first lore counter lands, and it pays off a curve that is already attacking rather than one still waiting to be built. Read as raw card advantage, three modest triggers across the usual Saga cadence, it looks thin. Read as a sequenced tempo play (buff the attacker, arm it permanently, knock the defender aside), it narrates a tidy origin: a hero suits up over three beats and is swinging by the end.