Writhing in the grip of Bigby's most triumphant creation, the lich is unable to flee as the unstoppable dreadnoughts approach!

The winged demon springs into the air and flies at incredible speed across the battlefield, moving halfway towards the lich. Even as it soars through the air, it's devilish master holds his clenched fists high and invokes a blistering series of spells. From one hand, a swarm of unerring silver darts spring, while the other simply begins to emit an ominous white light.

High above the spot where the lich is grappling with the disembodied hand, a mountain of ice coalesces out of the clouds. It hangs motionless for only a moment, and then smashes to the ground with crushing impact.

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In order, grapple check (1d20+44)[55], Damage - (2d6+12)[20].

The Hellfire Engines are now 80 ft away.

The Paeliryon flies at 100 ft (poor), so it's halfway to you.

The Conjurer cast two Quickened Magic Missiles.

(5d4+5)[16] force damage and
(5d4+5)[21] force damage

(1d20+24)[31] CL check against SR
(1d20+24)[39] CL check against SR

And then also casts my personal favorite spell, Iceberg (from Frostburn). You take (20d6)[67] bludgeoning damage and are buried in snow. CL Check - (1d20+24)[35].

Bigby's Clenched Fist also takes (20d6)[74] damage as well.