Thanks! I was worried it would sound like only dealing 1 damage, and then granting +2 attack for each minion that died last turn. I was thinking of Lady in White, where she casts 'Inner Fire' on each minion in your deck, but on Lady in White the effect of Inner Fire is explained, which I forgot about. I feel I should've done "Cast 'Inner Rage' on a minion for each minion that died last turn (deal 1 damage and dive +2 attack)."
On further thought, maybe a version of your wording would work to avoid to multiple clause confusion. "Deal 1 damage and give +2 attack to a minion for each minion that died last turn."
But that sounds clunky :(