Shangyang, Rain Predictor

Flying and Hexproof
{u}{u}, {t}, Target nonisland becomes an island.
Any player may play this ability.
{5}{u}{u}, All islands gain the ability , this land taps
for any color of mana. Any player may play this
ability.
Shangyang, Rain Predictor's power an toughness
are each equal to the number of Islends on the
battlefield.