Rune of Concentration

Enchant land
Enchanted land has "{2}, {t}, Pay 1 life: Add three
mana in any combination of {u} and/or {r} and/or {w} to your mana pool."
Cycling {2} ({2}, Discard this card; draw a card.)
When you cycle Rune of Concentration, target
creature you control gains protection from black
and from green until end of turn.