Mono, The Prismatic Machine

Converge - Mono, The Prismatic Machine enters
the battlefield with a +1/+1 counter on it for
each color of mana spent to cast it.
When Mono, The Prismatic Machine enters the
battlefield, you may search your library for a
nonland permanent card with converted mana
cost less than X and put it onto the battlefield,
where X is the number of +1/+1 counters on
Mono, The Prismatic Machine. The shuffle your
library.