Circle of Protection: Red

: The next time a red source of your choice would deal damage to you this turn, prevent that damage.

Fireball

This spell costs more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Flying Carpet

, : Target creature gains flying until end of turn.

Helm of Chatzuk

, : Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature’s combat damage, not its controller, among any of the creatures it’s being blocked by or is blocking.)

Wooden Sphere

Whenever a player casts a green spell, you may pay . If you do, you gain 1 life.

Nevinyrral’s Disk

Nevinyrral’s Disk enters the battlefield tapped.
, : Destroy all artifacts, creatures, and enchantments.

Aladdin’s Lamp

, : The next time you would draw a card this turn, instead look at the top X cards of your library, put all but one of them on the bottom of your library in a random order, then draw a card. X can’t be 0.

Winter Orb

As long as Winter Orb is untapped, players can’t untap more than one land during their untap steps.

Mana Vault

Mana Vault doesn’t untap during your untap step.
At the beginning of your upkeep, you may pay . If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
: Add .

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can’t, Lord of the Pit deals 7 damage to you.

Cocoon

Enchant creature you control
When Cocoon enters the battlefield, tap enchanted creature and put three pupa counters on Cocoon.
Enchanted creature doesn’t untap during your untap step if Cocoon has a pupa counter on it.
At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can’t, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying.

Lord Magnus

First strike
Creatures with plainswalk can be blocked as though they didn’t have plainswalk.
Creatures with forestwalk can be blocked as though they didn’t have forestwalk.

Serpent Generator

, : Create a 1/1 colorless Snake artifact creature token. It has “Whenever this creature deals damage to a player, that player gets a poison counter.” (A player with ten or more poison counters loses the game.)

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell’s converted mana cost.

Horror of Horrors

Sacrifice a Swamp: Regenerate target black creature. (The next time that creature would be destroyed this turn, it isn’t. Instead tap it, remove all damage from it, and remove it from combat.)

Lifeblood

Whenever a Mountain an opponent controls becomes tapped, you gain 1 life.

Red Mana Battery

, : Put a charge counter on Red Mana Battery.
, Remove any number of charge counters from Red Mana Battery: Add , then add an additional for each charge counter removed this way.

Abomination

Whenever Abomination blocks or becomes blocked by a green or white creature, destroy that creature at end of combat.

Johan

At the beginning of combat on your turn, you may have Johan gain “Johan can’t attack” until end of combat. If you do, attacking doesn’t cause creatures you control to tap this combat if Johan is untapped.

Mana Matrix

Instant and enchantment spells you cast cost up to less to cast.