Soulless Jailer

For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.) Equipped creature gets +2/+2 and has flying and haste. Equip 3RR

Reveal the top X plus one cards of your library. Choose a creature card and/or a land card from among them. Put those cards into your hand and the rest on the bottom of your library in a random order. If X is 5 or more, instead put the chosen cards onto the battlefield or into your hand and the rest on the bottom of your library in a random order.

+2: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle. −3: Koth deals damage to target creature equal to the number of Mountains you control. −7: You get an emblem with "Whenever a Mountain you control enters, this emblem deals 4 damage to any target."

If one or more tokens would be created under your control, twice that many of those tokens are created instead. 1W/PW/P, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak. (W/P can be paid with either W or 2 life.)

T: Add C. 1, T: Add one mana of any color. X, T: This land becomes a copy of target nontoken artifact you control with mana value X.

Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped.

You may activate abilities of creatures you control as though those creatures had haste. +1: Untap up to one target creature. −2: Mill three cards, then you may return a creature card with mana value 2 or less from your graveyard to the battlefield.

For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.) Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, you may have that creature become a copy of another target creature you control. Equip 2