Save convert and swiftcast for dreadnaughts, and then aoe them, flare, convert, flare, transpose, fire III, 1-2 x fire II, flare. Raging strikes/potion depends on how fast your comp makes it to each dreadnaught so i cant say whether you should save for it or not. Ideally your bard should pop foes for dreadnaughts as well if thats possible.