L
Landkiller
Guest
Here's a group of coin-flipping cards that are decent in my opinion.
Apprentice's Fireball R
Sorcery
Deal 3 damage to any target.
Flip a coin : If you lose the flip Apprentice's Fireball also deals 3 damage to you.
Apprentice's Theft U
Enchant Creature
Gain control of enchanted creature.
Flip a coin at the end of each turn. If you lose the flip, sacrifice Apprentice's Theft. If you win the flip, you may return Apprentice's Theft to it's owner's hand.
Apprentice's Cure W
Instant
Prevent 4 damage to any target.
Flip a coin : If you lose the flip, your opponent may deal 1 damage to a target of his or her choice.
Apprentice's Shadow B
Creature - Shadow
When Apprentice's Shadow comes into play, flip a coin. If you win the flip, sacrifice Apprentice's Shadow and destroy target nonblack creature.
1/1
Apprentice's Garden G
Sorcery
Flip a coin : If you win the flip, all forests may tap for a mana of any color this turn. If you lose the flip, all forests may not tap for mana this turn, but are 1/2 creatures.
Master's Fireball RRR
Sorcery
Each player chooses three different targets. Deal 4 damage to each target. Flip a coin : If you win the flip, you may not be a target of Master's Fireball.
Master's Theft UUU
Enchant Creature
Gain control of enchanted creature.
Enchanted creature gains "T, Flip a coin : If you win the flip, gain control of target creature as long as you control this creature."
Master's Cure WWW
Instant
Prevent 5 damage divided among any number of targets.
Flip a coin : If you win the flip, return Master's Cure to your hand as part of the spell's effect.
Master's Shadow BBB
Creature - Shadow
When Master's Shadow comes into play, flip a coin.
If you win the flip, remove all nonblack creatures from the game, and remove Master's Shadow from the game.
3/3
Master's Garden GGG
Enchantment
During your upkeep, flip a coin. If you win the flip, all forests are 2/2 creatures until end of turn. If you lose the flip, all forests may tap for mana of any color, and you gain 1 life each time a forest taps this turn.
Apprentice's Fireball R
Sorcery
Deal 3 damage to any target.
Flip a coin : If you lose the flip Apprentice's Fireball also deals 3 damage to you.
Apprentice's Theft U
Enchant Creature
Gain control of enchanted creature.
Flip a coin at the end of each turn. If you lose the flip, sacrifice Apprentice's Theft. If you win the flip, you may return Apprentice's Theft to it's owner's hand.
Apprentice's Cure W
Instant
Prevent 4 damage to any target.
Flip a coin : If you lose the flip, your opponent may deal 1 damage to a target of his or her choice.
Apprentice's Shadow B
Creature - Shadow
When Apprentice's Shadow comes into play, flip a coin. If you win the flip, sacrifice Apprentice's Shadow and destroy target nonblack creature.
1/1
Apprentice's Garden G
Sorcery
Flip a coin : If you win the flip, all forests may tap for a mana of any color this turn. If you lose the flip, all forests may not tap for mana this turn, but are 1/2 creatures.
Master's Fireball RRR
Sorcery
Each player chooses three different targets. Deal 4 damage to each target. Flip a coin : If you win the flip, you may not be a target of Master's Fireball.
Master's Theft UUU
Enchant Creature
Gain control of enchanted creature.
Enchanted creature gains "T, Flip a coin : If you win the flip, gain control of target creature as long as you control this creature."
Master's Cure WWW
Instant
Prevent 5 damage divided among any number of targets.
Flip a coin : If you win the flip, return Master's Cure to your hand as part of the spell's effect.
Master's Shadow BBB
Creature - Shadow
When Master's Shadow comes into play, flip a coin.
If you win the flip, remove all nonblack creatures from the game, and remove Master's Shadow from the game.
3/3
Master's Garden GGG
Enchantment
During your upkeep, flip a coin. If you win the flip, all forests are 2/2 creatures until end of turn. If you lose the flip, all forests may tap for mana of any color, and you gain 1 life each time a forest taps this turn.