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'If you tap a permanent for mana, it produces twice as much of that mana instead.
'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...
'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}.
'Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.
'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...
'If you tap a permanent for mana, it produces twice as much of that mana instead.
'You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up...
'[+2]: Add {R}{R}{R}. Exile the top three cards of your library. Choose one. You may play that card this turn. [+1]: Create a token that's a copy of target creature...
'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}.
'When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land of their choice. When there are...