Sort by:
'{T}: Add {C}.
{1}, {T}: Add one mana of any color.
'Tap all lands target player controls and that player loses all unspent mana.
'This artifact doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap this artifact. At the beginning of your draw...
'Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
'Whenever you cast a multicolored spell, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") {X}{X}{X}, {T}:...
'At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you.
{T}: Add {C}{C}.
'This artifact doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap this artifact. At the beginning of your draw...
'Whenever a player taps a land for mana, that player adds one mana of any type that land produced.
'Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose...
'If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead. If the player discards a...
'Enchant creature you control When this Aura enters, exile target nonland permanent an opponent controls until this Aura leaves the battlefield. Enchanted creature has ward {2}. (Whenever it becomes the...
{T}, Pay 1 life: Add one mana of any color.