Darksteel Axe

Indestructible (Effects that say "destroy" don't destroy this artifact.)
Equipped creature gets +2/+0.
Equip {2}

Bonesplitter

{B}, Discard a creature card: Return target creature card from your graveyard to your hand.

Target player draws two cards and loses 2 life.

First strike
{1}{B}: Regenerate Lim-Dûl's High Guard.

Return target creature card and all other cards with the same name as that card from your graveyard to your hand.

When Kjeldoran Dead enters, sacrifice a creature.
{B}: Regenerate Kjeldoran Dead.

Return target creature card with mana value 3 or less from your graveyard to the battlefield.
Cycling {2} ({2}, Discard this card: Draw a card.)

Defender
When Barrier of Bones enters, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

{1}{B}: Regenerate Augur of Skulls.
Sacrifice Augur of Skulls: Target player discards two cards. Activate only during your upkeep.