Have

Frozen Shade

{B}: This creature gets +1/+1 until end of turn.

Island

Erg Raiders

At the beginning of your end step, if this creature didn't attack this turn, it deals 2 damage to you unless it came under your control this turn.

Soul Barrier

Whenever an opponent casts a creature spell, this enchantment deals 2 damage to that player unless they pay {2}.

Counterspell

Merfolk of the Pearl Trident

Swamp

Unholy Strength

Enchant creature
Enchanted creature gets +2/+1.

Zephyr Falcon

Soul Net

Whenever a creature dies, you may pay {1}. If you do, you gain 1 life.

Rod of Ruin

{3}, {T}: This artifact deals 1 damage to any target.

Phantom Monster

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Scathe Zombies

Mole Worms

You may choose not to untap this creature during your untap step.
{T}: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped.

Bog Imp

Flying (This creature can't be blocked except by creatures with flying or reach.)

Bog Rats

Bog Wraith

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)