Mana Vault [Ultimate Masters]Set: Ultimate Masters Type: Artifact Rarity: Mythic Cost: {1} Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.

Tap five untapped Merfolk you control: Put a +1/+1 counter on each Merfolk you control

Set: Legions Type: Creature — Sliver Rarity: Rare Cost: {3}{R} All Slivers have "{T}: Target Sliver creature gets +X/+0 until end of turn

Set: Urza's Saga Type: Artifact Rarity: Uncommon Cost: {0} {1}

Set: HeartGold & SoulSilver: Undaunted Type: Item Rarity: Promo

{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn

and that player can't activate abilities that aren't mana abilities

Creatures of the chosen type have shroud

your weapons gain +1 [Power] until end of turn

−7: Untap up to six target lands

"When I grafted the Planar Bridge into myself

She is the apex of the artificer's craft

If your hero would be dealt damage