Ramesses III's Wooden Elephant

Origin
The harem conspiracy was a murder plot against the Egyptian pharaoh Ramesses III. The principal figure behind the plot was his secondary wife, Tiye, who wanted her own son to take the throne instead of the real heir. Ramesses was indeed killed but his son Ramesses IV did take the throne and the conspirators were convicted and executed. As a part of his harem Tiye was able to slip poison in III's drink, after his death IV took the throne and before his new Harem could gather support to kill him as well IV picked several magistrates to investigate his father's death. The harem was found out and executed ending the Ramesses' harem.

Elephant in the room is an idiom for an obvious problem or risk no one wants to discuss or challenge. It is based on the idea that something as conspicuous as an elephant can appear to be overlooked in codified social interactions and that sociology/psychology of repression also operates on the macro scale.

Effects
Grows in size until stopped by the physical limitations of the room it is in. Activated by wind, from the sighs of discontent from Ramesses III. Once acknowledged it will return to normal size.