Keystone Council

Whenever a non token artifact is sacrificed create
a clue token.
Sacrifice a creature and five clue tokens: Create a legendary artifact equipment named The
Keyblade with "When this artifact enters
the battlefield, chose a color." and " {1}: Creatures
of the chosen color get +1/+1 until end of turn."
and Equip creature of the chosen color {3}.
Council (You can have two commanders if both
have council and share at least two colors.)