Coveted Jewel [March of the Machine Commander] BT7-064 Set: Time Spiral Remastered Type:

Set: Time Spiral Remastered Type: Artifact — Rarity: Rare Cost: {2} Creatures you control are Slivers in addition to their other creature types

Then each opponent who didn't sacrifice a creature discards two cards

Set: Mercadian Masques Type: Enchantment Rarity: Rare Cost: {2}{G}{G} Whenever a creature you control dies

if at least seven mana was spent to cast it

Set: Pro Tour Collector Set Type: Land — Rarity: Rare Whenever City of Brass becomes tapped

Coveted Jewel [March of the Machine Commander] BT7-064 Set: Time Spiral Remastered Type:Set: March of the Machine Commander Type: Artifact Rarity: Rare Cost: {6} When Coveted Jewel enters the battlefield, draw three cards. {T}: Add three mana of any one color. Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of Coveted Jewel. Untap it.