Energizer

Artifact Creature — Construct

: Put a -1/-1 counter on this creature and a -1/-1 counter on target creature.

3.9/10$0.24

Serrated Biskelion

: Put a -1/-1 counter on this creature and a -1/-1 counter on target creature.

1.6/10$0.13

Gnarled Effigy

, : Put a -1/-1 counter on target creature.

1.6/10$0.13

Gnarled Effigy

, : Put a -1/-1 counter on target creature.

3.6/10$0.25

Dragon Blood

, : Put a +1/+1 counter on target creature.

3.6/10$0.25

Dragon Blood

Host Artifact Creature — Construct

, : Put a +1/+1 counter on target creature.

$0.11

Voracious Vacuum

Host Artifact Creature — Construct

When this creature enters, put a +1/+1 counter on target creature.

$0.11

Voracious Vacuum

Artifact Creature — Scarecrow

When this creature enters, put a +1/+1 counter on target creature.

5.2/10$1.02

Lockjaw Snapper

Artifact Creature — Scarecrow

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When this creature dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.

5.2/10$1.02

Lockjaw Snapper

Artifact Creature — Golem

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When this creature dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.

3.6/10$0.04

Iron Bully

Artifact Creature — Golem

Menace (This creature can't be blocked except by two or more creatures.)

When this creature enters, put a +1/+1 counter on target creature.

3.6/10$0.04

Iron Bully