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Greater Dimensional Step
Bard Attack 27

You and an ally vanish from one place, appearing near an enemy in a flash. When your ally strikes, the momentum of the transport gives weight to the attack.

Close burst 5

Trigger: You hit an enemy within 5 squares of you with a basic attack using a weapon.

Effect: The attack deals 1[W] extra damage to the enemy you hit, and you and one ally in the burst can teleport to squares adjacent to that enemy. The ally can then make a basic attack against that enemy as free action, dealing 1d10 extra damage if the attack hits.

Greater Dimensional Step is an encounter power available to bards at the 27th level.[HotF:67]