The Alliance of Skandoliva

Creatures you control get +1/+1 for each
non-black colour among other permanents you control.
Whenever a creature enters the battlefield under you control deal 1 damage to target creature, target opponent loses 1 life and you gain 1 life and draw a card.
If you control another green, blue, red and white permanent, whenever a creature you control activates an ability, each creature you control gains that ability until end of turn.