Triumph of the Hordes NPH-123/5075 (The List Reprints)

Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

NM - $23.30
LP - $18.70
MP - $14.00
HP - $9.40
DMG - $4.70