Focusing his anger, Xhanfaerd enters a quite malevolent stance and speaks.
"We need to get rid of them, so that we can cross easily afterward !"
He then summons a rain of stones on the flying creatures, roaring out loud while doing so.
Spoiler: OOCSo, entering Black Seraph's Glare, then casting Stone Call, aiming in the air, far enough to not hit anyone. Then, free action intimidate against them.
Damage - (2d6)[6]
Intimidate - (1d20+18)[36]