[+2]: Creatures you control get +1/+1 and gain haste until end of turn.
[−3]: Domri, City Smasher deals 3 damage to any target.
[−8]: Put three +1/+1 counters on each creature you control. Those creatures gain trample until end of turn.
Domri’s first and third abilities affect only creatures you control at the time they resolve. Creatures you begin to control later in the turn won’t get +1/+1 or gain haste if his first ability has resolved, and won’t gain trample or get three +1/+1 counters if his third ability has resolved.