I am not intimately familiar with Infinite Variety, but here's an (Ex) special attack that is decent with Aberration Wild Shape:
Dual Action (Ex) A Thoon elder brain is a creature made
up of multiple minds, all touched by the unreality of the
Far Realm. Make two initiative checks for the creature.
The higher result represents a mental action turn, and
the lower result is used for a physical action turn. This
means a Thoon elder brain can do more in a single round
than most creatures. For example, it could perform an
overmind blast (a purely mental action) on initiative
count 17, then move and make a tentacle attack (a
physical action) on initiative count 12. These initiative
counts can change if a Thoon elder brain readies an
action or delays to let its other half go first.
MM5, p121