Matronius, Lead Architect

Noncreature spells in your hand have flash.
Whenever you cast an artifact or enchantment,
create a 1/1 colorless Construct Artifact creature
token with "{t} sacrifice this creature: Spells you
cast cost {1} less to cast this turn."
{x}{w}{u}{b}: Search your library for an artifact
or enchantment card with converted mana
cost X or less, reveal it, put it in to your hand,
then shuffle your library.