Diamond Knight
{3}
Artifact Creature -- Knight
1/1
Vigilance (Attacking doesn't cause ~this~ to tap.)
As ~this~ enters, choose a color.
Whenever you cast a spell of the chosen color, put a +1/+1 counter on ~this~.
Diamond Mare
{2}
Artifact Creature -- Horse
1/3
As ~this~ enters, choose a color.
Whenever you cast a spell of the chosen color, you gain 1 life.
Prism Ring
{1}
Artifact
As ~this~ enters, choose a color.
Whenever you cast a spell of the chosen color, you gain 1 life.