
Reyhan enters with three +1/+1 counters on it.
Whenever a creature you control diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying. or is put into the command zonecommand zoneThe area where your commander waits before you cast it, and where it may return instead of going to the graveyard, exile, your hand or library., if it had one or more +1/+1 counters on it, you may put that many +1/+1 counters on target creature.
PartnerPartnerYou can have two commanders if both have partner. (You can have two commanders if both have partner.)
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.
Any two cards with plain Partner can be your commanders together. The deck's colours are both cards' colours combined. Showing 36 of 69, yours first.