Skeletal WurmHow it works & interactions with other cards

What it Does

Skeletal Wurm is a 7/6 creature with a built-in protection mechanism: for just one black mana, you can create a regeneration shield. This shield acts as a safety net, preventing the creature from being destroyed the next time it would take lethal damage or be hit by a 'destroy' effect during the current turn.

How it Resolves Step by Step

When you pay one black mana to activate the ability, it goes on the stack and, once resolved, creates a 'regeneration shield' that lasts for the rest of the turn. If Skeletal Wurm would be destroyed while this shield is active, it instead stays on the battlefield with all damage marked on it removed. As part of this process, the Wurm is tapped and, if it was in combat, it is removed from combat.

Common Mistakes

A frequent error is waiting until the creature is already in the graveyard to try and regenerate it. Regeneration must be activated *before* the destruction event occurs; it is a replacement effect, not a resurrection. Also, remember that regeneration does not protect against being sacrificed, having its toughness reduced to zero or less, or being exiled.

When to Play It

Because it costs eight mana, Skeletal Wurm is best suited for the late game or in decks that can 'cheat' it onto the battlefield. Once it is out, you should always leave at least one black mana open to protect it from board wipes or targeted removal spells.

Interaction examples

Surviving Targeted Destruction

Meteor Golem

If your opponent plays Meteor Golem and targets your Skeletal Wurm with its 'enters the battlefield' ability, you can respond by paying one black mana to activate the Wurm's regeneration ability. The regeneration ability resolves first, creating a shield. When the Golem's ability tries to resolve, the shield is consumed: the Wurm is tapped instead of destroyed and remains on the battlefield.

The Sacrifice Trap

Sheoldred, Whispering One

If an opponent controls Sheoldred, Whispering One, you will be forced to sacrifice a creature at the beginning of your upkeep. If you choose to sacrifice Skeletal Wurm, the regeneration shield will NOT save it. Regeneration only replaces destruction; sacrifice is a different mechanic that bypasses regeneration entirely.