The Royal Quartz

{10}{10}: Add 1 level counter to "The Royal Quartz" Increase the cost of this ability by {10}.
{t}: Search your library or graveyard for a unit card with value X0 where X is the number of level counters on "The Royal Quartz" Swap target owned and controlled unit with the sought after unit card.
Quartz units you control have minimum power and toughness X0/X0 where X is the number of level counters on "The Royal Quartz"
checkmate
50/500