Lord Commander O'Shaserra

Menace, Vigilance, Flying, Hexproof
Other Tau you control get +1/+1 and have
vigilance.
Battlesuits you control get +1/+1 and have
lifelink.
Pay 2 ion counters : Create a 1/1 colorless drone artifact creature token with haste and vigilance.
Pay 5 ion counters : Search your library for a
card, reveal it, put it into your hand, then shuffle
your library.