Sidohr, Dream Channeler

Whenever you cast a spell, gain 1 life for each of
its colors.
Whenever a creature enters the battlefield under
your control, gain 1 life for each color it shares
with other creatures you control.
{p/b}{p/g}{p/r}{p/u}{p/w}: Create a copy of target creature you control, then you may cast a spell from your hand
with total cost less than or equal to the number of colors of the copy without paying its mana cost.