Destroy each nonland permanent with mana value X or less.

Exile up to one target card from a graveyard. Create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

At the beginning of your upkeep, surveil 1. Then if there are seven or more cards in your graveyard, sacrifice this artifact, it deals 2 damage to each opponent, and you gain 2 life. (To surveil 1, look at the top card of your library. You may put it into your graveyard.)

First strike, vigilance, lifelink
Aura and Equipment spells you cast cost less to cast.

As long as you control an artifact, this creature gets +1/+0 and has deathtouch.

, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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Exile all creatures and planeswalkers with mana value 3 or less from the battlefield and all creature and planeswalker cards with mana value 3 or less from all graveyards.

Whenever this creature deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback until end of turn instead if this creature is saddled. (You may cast that card from your graveyard for its flashback cost. Then exile it.)
Saddle 3

Flying
Reinforce 2— (, Discard this card: Put two +1/+1 counters on target creature.)

, Sacrifice this artifact: This turn, when target creature you control attacks and isn't blocked, you may gain life equal to its power. If you do, it assigns no combat damage this turn.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
When this creature enters or dies, create a 1/1 black Bat creature token with flying.

Trample
Cycling (, Discard this card: Draw a card.)
When you cycle this card, put a trample counter on target creature you control.

Whenever another creature you control with power 2 or less enters, you may pay . If you do, draw a card.

(: Add .)

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Flash
Enchant creature
Enchanted creature gets -X/-0, where X is the number of cards in your graveyard.

: Add .
, Sacrifice this land: Search your library for a basic Plains, Swamp, or Forest card, put it onto the battlefield tapped, then shuffle.
Cycling (, Discard this card: Draw a card.)