Senatorial Diplomat

When this card enters the field under your
control, target a Biome card on the opponent's
field and take control of it. The targeted Biome
can be tapped for its color or for White supply.
If you control three copies of this card, you can
pay {4} and tap all three copies and take control
of a Planet card on the opponent's field. The
copies of this card do not untap during your next
untap phase.