Keldon Key enters the battlefield tapped.
: Add or to your mana pool.
: Add to your mana pool. Put Keldon Key on top of your library.
: Keldon Key becomes a 2/2 blue Faerie creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Keldon Key on top of your library.: Keldon Key becomes a 2/2 blue Faerie creature until end of turn. It's still a land.
