Électropuissance (FR Electropotence)

Enchantement    (CMC:3)

À chaque fois qu'une créature arrive sur le champ de bataille sous votre contrôle, vous pouvez payer . Si vous faites ainsi, cette créature inflige un nombre de blessures égal à sa force à une cible, créature ou joueur.

Là où la vie et la force entrent en collision.

122 ZEN • FRChristopher Moeller

™ & © 1993—2009 Wizards of the Coast

Notes: TODO: Update Copyright

Legal in: Modern,Zendikar Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Electropotence {2}{R} Enchantment Whenever a creature enters the battlefield under your control, you may pay {2}{R}. If you do, that creature deals damage equal to its power to target creature or player.

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View this MTG card on Gatherer

10/1/2009
You target a creature or player when the ability triggers. You decide whether or not to pay  as the ability resolves.
10/1/2009
Once you decide to pay , it's too late for anyone to respond (such as by activating a regeneration ability the targeted creature has).
10/1/2009
If you pay , the creature that entered the battlefield deals damage equal to its current power to the targeted creature or player. If it's no longer on the battlefield, its last known existence on the battlefield is checked to determine its power.
10/1/2009
Electropotence is the source of the ability, but the creature is the source of the damage. The ability couldn't target a creature with protection from red, for example. It could target a creature with protection from creatures, but all the damage would be prevented. Since damage is dealt by the creature, lifelink, deathtouch, and wither are taken into account, even if the creature has left the battlefield by the time it deals damage.

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Card Electropotence is not on TCGPlayer.