Aizen, Hogokyu's Perfection

Shadow (This creature can block or be blocked by only creatures with shadow)
You may have Aizen, Hogokyu's Perfection enter the battlefield as a copy of any permanent on the battlefield, except it has Aizen, Hogokyu's Perfection's other abilities and types.
The "legend rule" doesn't apply to permanents you control.

{p/c}{p/w}{p/u}{p/b}: Exile a target permanent you control and return it to the battlefield under your control.