Yellow Pearl

If a creature would be tapped, you may pay {r}{p/r}. If you do, copy it.
If you would copy a creature, you may create a treasure token and gain two life instead.
Whenever you cast a spell with convoke, you may tap this. If you do, add
{2}{r}{r}. This only triggers once.
Whevever this becomes tapped, add {c}{c}.