Okay, here is my proposed conversion. Please give me feedback as to balance.
Elebtale, the Browstar
Item Slot: Head
Property: You can a +2 item bonus to bluff, Insight, and Perception and a +5 item bonus to saving throws against illusions.
Power (At Will): Minor action. You can use ghost sound (Wizard class feature) as a minor action.
Power (Encounter): Standard Action. You can use mire the mind (Warlock 7)
Power (Daily): Standard action. You can use veil (bard 10).
Power (Weekly): As the ritual Guards and Wards, but the component cost is only 2500 and 3 healing surges.
Power (Monthly): As the ritual Deceive Sensor, but the component cost is only 22,500 and 3 healing surges.