Ugin, Lazotep Shell

: Legendary Soulbond (When this or another legendary permenent enters under your control, you may pair it with an unpaired legendary permenent.)
0: Ugin also becomes a 4/6 creature and him and his paired permenent each gain flying and hexproof until your next turn.
0: Exile Ugin and his pair. For as long as they remain exiled, you may cast them without paying their mana costs and as though they had flash.