Bladecoil Serpent

: This creature gains trample until end of turn.

Devoid (This card has no color.)

When you cast this spell, for each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain trample, haste, and annihilator 1 until end of turn.

Trample, haste, annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)

Defender

: This creature gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender.

: This creature gets -1/-1 and gains your choice of banding, flying, first strike, or trample until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

When The Mightstone and Weakstone enters, choose one —

• Draw two cards.

• Target creature gets -5/-5 until end of turn.

: Add . This mana can't be spent to cast nonartifact spells.

(Melds with Urza, Lord Protector.)

: Until end of turn, this creature gets -1/-1 and gains your choice of flying, vigilance, deathtouch, or haste.