Parmenides

Parmenides takes a step south (down), as the spearmen are knock back. Encouraged by Dumar's presence, he sends a brilliant blast of flashing colors at the cluster of enemies.

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I shift down, then take an action point: Recovering 4 HP for Dumar's Inspiring Presence, and gaining a +3 bonus to attack rolls from my Action Surge.

Color Spray - Sp1:(1d20+10)[27], Sp2:(1d20+10)[24], A1:(1d20+10)[28], A2:(1d20+10)[12] vs. Will.

Hit - (1d20+7)[13] radiant damage, and daze.

NecroRebel - I'm not taking into account cover, if there is any. Also, if Sp1 ended after the push in A2's square, is he prone?
Also, I assumed the thunderwave hit the spearmen. If it didn't, I'll shift down and left insted of down (near Sp2), and still use Color Spray on all except Sp1, since he'll be out of the blast.