Star Chart

Archer Form - {w}{w}{t} Choose target creature an opponent controls then tap an untapped druid or cleric you control. Roll a d8, that creature takes damage equal to the roll then if that creature would be destroyed, exile it instead.
Chalice Form - {g}{g}{t} Until the end of your next turn Commanders and Druids you control gain "{t} Add two mana of any one color"
Dragon Form - {r}{r}{t} Until the end of your next turn Druids and Commanders you control have base power