Super mardi

{B}, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.

Target player discards a card for each Swamp you control.

Whenever an opponent casts a spell, this creature gets +2/+2 until end of turn.

Target creature gets +4/+4 until end of turn.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

{B}{B}, Pay half your life, rounded up: Destroy target nonblack creature. It can't be regenerated.

{G}, {T}: Target creature gets +2/+2 until end of turn.

All lands become 2/2 creatures until end of turn. They're still lands.

Destroy target artifact or enchantment.

When this creature enters, look at target opponent's hand.

All creatures get -1/-1 until end of turn.

First strike When this creature enters, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of S...

Whenever a creature you control deals combat damage, you gain that much life.

This spell can't be countered. Destroy all artifacts, creatures, and lands. They can't be regenerated.

This creature can't block.

This creature can't attack unless a creature with greater power also attacks. This creature can't block unless a creature with greater power also b...

{T}: All damage that would be dealt to target creature this turn by a source of your choice is dealt to this creature instead.

{T}: This creature deals 2 damage to any target and 3 damage to you.