Play this in Akachi. Not for the ability, but for the fast charge jank.
1) With Spirit-Speaker out, you can immediately discard this and convert the charges to resources. This is a net gain of 2r at fast speed.
2) The charges on this can be fed to Angered Spirits. The charges on this thing by itself can clear Angered Spirits over the course of 4 rounds.
3) The charges can power 2 Torrent of Powers with 2 charges spent on each.
4) Occasionally, you might actually use the ability. Note that Obfuscation does not require you to exhaust to use it, meaning that if you exhaust it for Angered Spirits, you can still use it just fine.
Basically, think of this card as paying for a slot with 4 charges on it at fast speed for 2r, and you got a few tricks available to you. It does take an arcane slot, but a lot of Akachi decks try to have support for extra arcane slots anyway; this concept best fits into one of those styles of decks.