Stand united

Whenever a creature you control is sent to the Graveyard, put a +1/+1 token on all creatures you control that share at least one color with the creature sent to the Graveyard. Then you gain an amount of life equal to the number of +1/+1 counters there were on this creature.

"For every brother that you lose, grow stronger, so that you may protect those still alive"
-Dorwann, Truth Speaker