Urza's Saga

When an opponent casts a creature spell, if Opal Caryatid is an enchantment, Opal Caryatid becomes a 2/2 Soldier creature.

Whenever Cave Tiger becomes blocked by a creature, Cave Tiger gets +1/+1 until end of turn.

Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay ...

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Viashino Weaponsmith becomes blocked by a creature, Viashino Weaponsmith gets +2/+2 until end of turn.

As an additional cost to cast this spell, sacrifice a land. Destroy target land.

Whenever Retromancer becomes the target of a spell or ability, Retromancer deals 3 damage to that spell or ability's controller.

When Monk Realist enters the battlefield, destroy target enchantment.

Destroy target artifact. Cycling {2} ({2}, Discard this card: Draw a card.)

Shower of Sparks deals 1 damage to target creature and 1 damage to target player or planeswalker.

Goblin Raider can't block.

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Haste Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless yo...

Attacking creatures gain first strike until end of turn.

Heat Ray deals X damage to target creature.

Destroy target land. Cycling {2} ({2}, Discard this card: Draw a card.)

Enchant creature {R}: Enchanted creature gets +1/+0 until end of turn. When Fiery Mantle is put into a graveyard from the battlefield, return Fiery...

Echo {R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its...

Enchant creature Enchanted creature gets +1/+1 for each other creature you control.

Whenever Dromosaur blocks or becomes blocked, it gets +2/-2 until end of turn.

Each opponent discards two cards.

{B}: Regenerate Unworthy Dead.

Flying Whenever Ravenous Skirge attacks, it gets +2/+0 until end of turn.

Enchant creature Enchanted creature gets -1/-1. Cycling {2} ({2}, Discard this card: Draw a card.)