Seso, Warlock Supreme

Eminence - Artificer, Cleric, Druid, Shaman, Spellshaper, and Wizard permanents, spells and
cards you own that aren't in play are a Warlock
in addition to their other types.
Tap eight untapped Warlocks you control:
Search your library for a colorless card, white
card, a blue card, a black card, a red card, and a
green card. Reveal those cards and put them into
your hand. Then shuffle your library.