Avatar of Sol, Archon of Mana

Avatar of Sol is every color.
Sunburst (This enters the battlefield with a
+1/+1 counter on it for each color of mana
spent to cast it.)
Avatar of Sol Enters the battlefield
With X +1/+1 counters.
{t} Remove any number of +1/+1 counters
from Avatar of Sol: Add one mana of any
color for each counter removed this way.
~It is the final step in the artificers lost art,
the true refinement of mana.~