Echoing Void

Echoing void enters tapped and remains tapped until five or more lands are tapped once untapped Echoing Void untaps every turn until sealed {T}Add {X} where X equals the amount of mana you have the highest of {t} Rift- target card is sent to a separate battlefield that cannot influence the other nor damage the player, if Echoing void is sealed rift battlefield cards are exiled {Y} Seal- exile Echoing Void, Y is the maximum amount of mana you control with a minimum value required of 5, any player can activate this ability