Defender

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

Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

Equipped creature gets +2/+0.

Equip

Enchant creature

When enchanted creature dies, draw three cards, then discard one of them.

At the beginning of combat on your turn, exile up to one target card from a graveyard.

: Adapt 2.

Whenever one or more +1/+1 counters are put on Emperor of Bones, put a creature card exiled with Emperor of Bones onto the battlefield under your control with a finality counter on it. It gains haste. Sacrifice it at the beginning of the next end step.

: Prevent the next 3 damage that would be dealt to target creature this turn. Activate only if you have more cards in hand than each opponent.

, Reveal X black cards from your hand, Sacrifice Martyr of Bones: Exile up to X target cards from a single graveyard.

Haste

Tribute 2 (As this creature enters, an opponent of your choice may put two +1/+1 counters on it.)

When Oracle of Bones enters, if tribute wasn't paid, you may cast an instant or sorcery spell from your hand without paying its mana cost.

, : Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

: Regenerate Restless Bones.

Whenever an opponent discards a card, exile it from their graveyard with a stash counter on it.

During your turn, you may play cards you don't own with stash counters on them from exile, and mana of any type can be spent to cast those spells.

, : Each opponent discards a card. Activate only as a sorcery.

At the beginning of each end step, if an opponent discarded a card this turn, you draw a card and you lose 1 life.

: Each opponent with no cards in hand loses 10 life.