Dungeonmaster's Sanctum

{t}, Pay 1 life: Add 1 mana of any color.
{t}, Pay 3 life, Exile Dungeonmaster's Sanctum
and 2 untapped lands you control: Add 3 mana
in any combination of colors. Return
Dungeonmaster's Sanctum and the 2 untapped
lands used for its activation cost to the battlefield
under their owners' control at the end of those
players' next turn.