Black Poplar ShamanHow it works & interactions with other cards

Understanding Regeneration

The ability of Black Poplar Shaman creates a 'regeneration shield' for a target Treefolk. This shield lasts until the end of the current turn. If the shielded permanent would be destroyed by a spell or ability, or by lethal combat damage, the shield is used up instead. When this happens, the creature is not destroyed; it remains on the battlefield, becomes tapped, all damage is removed from it, and if it was in combat, it is removed from combat.

Step-by-Step Resolution

First, you must pay the mana cost of two generic and one black mana to activate the ability, targeting a creature with the Treefolk subtype. Once the ability resolves, the target gains a regeneration shield. If that Treefolk is later targeted by a destruction effect or takes lethal damage later in the turn, the shield is consumed. Note that you must activate the ability before the destruction event happens; you cannot wait for the creature to be in the graveyard.

Common Pitfalls

A common mistake is trying to use Black Poplar Shaman to save a creature from being sacrificed or having its toughness reduced to zero. Regeneration only replaces 'destruction.' Effects that say 'sacrifice,' '-X/-X' effects, or the 'Legend Rule' do not destroy the creature, so the shield will not save them. Additionally, if an effect states a creature 'cannot be regenerated,' Black Poplar Shaman's ability will be ignored upon resolution of that effect.

When to Activate

The best time to use this ability is in response to a removal spell or during the declare blockers step of combat. Since the shield lasts for the entire turn, you can even activate it during your main phase if you anticipate a board wipe. Just remember that the creature becomes tapped when the shield is used, which might affect your plans for subsequent combat phases or activated abilities.

Interaction examples

Protecting a Transformed Ally

Roaming Throne

If you have Roaming Throne on the battlefield and chose 'Treefolk' as it entered, it gains that creature type. If an opponent tries to destroy Roaming Throne with a spell, you can pay three mana to activate Black Poplar Shaman, targeting the Throne. When the destruction effect tries to resolve, the Throne's regeneration shield is consumed, keeping it on the battlefield.

Value Through Combat

Solemn Simulacrum

In a scenario where you have an effect that makes Solemn Simulacrum a Treefolk, you could regenerate it using Black Poplar Shaman. However, keep in mind that if the regeneration shield is used, Solemn Simulacrum does not die. This means its triggered ability 'When this creature dies, you may draw a card' will not trigger, as the creature never left the battlefield.