Unagi serpent

islandwalk, kicker {1}{u}{u}
Unagi serpent has +1/+1 for each island you control. If you control no islands, Unagi serpent has -2/-2. If you payed the kicker cost, Unagi serpent has the following abilities: {t}, swap a land you control with a land target opponent controls of your choice.
{u}{u}{u}, target creature gains island walk until end of turn.