Emestri, Conquering Tyrant

Eminince -- Whenever a land comes under your control, if Emestri, Conquering Tyrant is in the command zone or on the battlefield, you gain 1
life.
{4}{r}, {t}: Create three 1/1 red and white Soldier creature tokens.
{4}{b}, Tap three untapped creatures you control:
Gain control of target land.