Omnath, Locus of One

Whenever a land enters the battlefield, creatures
you control get +1/+1 and creatures your
opponents control get -1/-1 until end of turn.
If a land entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Whenever a source an opponent controls deals
damage to you or a permanent you control, create
a 1/1 white Phyrexian Insect creature token with flying, haste, and "{t}: add one mana of any color" unless they sacrifice an unt