Beat of the Ironsong | Majestic [Rainbow Foil]

Choose X+1, where X is the number of +1{p} counters on an attacking Dawnblade;
Target Dawnblade attack gets +1{p}.
Target Dawnblade attack gets go again.
Cards defending target Dawnblade attack can't gain {d}.
Damage target Dawnblade attack would deal can't be prevented.