Gothmon, Perfect Disaster

Menace, Deathtouch, Ward sacrifice a creature
Spells you own have Emerge where the
emerge cost is equal to the mana cost.
Effects that reduce generic mana symbols
also reduce colored mana symbols
At the beginning of each player's upkeep
they create a 1/1 mutant creature token with
"this token counts as having a CMC of X where
X is the highest CMC among creatures they
control."