SAN MENTOU THE MAGICIAN

MAGIC {x}times 30
every 3 turns pay {x} if you don't sacrifice a
dragon if you can't sacrifice 2 creatures if you
can't discard your hand sacrifice this
enchantment and put the top half of your deck
rounded down in your graveyard
{t}: draw a card
{5}{t}:{e}{e}
{e}{e}{e}{e}{e}{e}{e}: you get {x}mana for the
next 3 turns