some cool name (Uncommon)
3
Artifact
As long as (cardname) is untapped your graveyard has hexproof.
T: Exile two cards from your graveyard: Add (1) to your mana pool.
I like Gravefeed, but maybe change it so its like Flanking, where each instance is cumulative:
Funeral Guard (Common)
W
Creature - Human Soldier
1/1
Gravefeed 1 (Whenever a creature you control dies, you may put a +1/+1 counter on this creature.)
Funeral Captain (Rare)
WW
Creature - Human Soldier
2/3
Gravefeed 2 (Whenever a creature you control dies, you may put two +1/+1 counter on this creature.)
Soul Sucker (Rare)
2BBB
Creature - Demon
3/3
Flying
Gravefeed 3 (Whenever a creature you control dies, you may put three +1/+1 counter on this creature.)
T: Destroy target creature you control.
some cool name (Uncommon)
3
Artifact
As long as (cardname) is untapped your graveyard has hexproof.
T: Exile two cards from your graveyard: Add (1) to your mana pool.
I like Gravefeed, but maybe change it so its like Flanking, where each instance is cumulative:
Funeral Guard (Common)
W
Creature - Human Soldier
1/1
Gravefeed 1 (Whenever a creature you control dies, you may put a +1/+1 counter on this creature.)
Funeral Captain (Rare)
WW
Creature - Human Soldier
2/3
Gravefeed 2 (Whenever a creature you control dies, you may put two +1/+1 counter on this creature.)
Soul Sucker (Rare)
2BBB
Creature - Demon
3/3
Flying
Gravefeed 3 (Whenever a creature you control dies, you may put three +1/+1 counter on this creature.)
T: Destroy target creature you control.