Card Rulings:Lifeforce Harmonizer

"Lifeforce Harmonizer":

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TCG Rulings

• This is a Multi-Trigger Effect [sic] that can be activated during either player’s turn.

• This effect can only be chained to the activation of a card that is confirmed to inflict damage at resolution. It cannot be used against the activation of “Wave-Motion Cannon” or the activation of the effect of “Wave-Motion Cannon”. It cannot be used against “Thestalos the Firestorm Monarch” since you don’t know if damage will be inflicted.

• If you control “Des Wombat” and it is preventing you from taking damage, you cannot activate “Lifeforce Harmonizer”.

• You can use “Lifeforce Harmonizer” on your opponent’s card that inflicts damage to themselves, such as “Zombie Mammoth” if there is a situation where it will inflict damage to the opponent.

OCG Rulings

• This is a Quick Effect.

• Discarding this card to the Graveyard is a Cost to activate the effect.

• You can activate the effect during your opponent's turn.

• The effect of "Lifeforce Harmonizer" cannot be activated against an effect which may or may not inflict damage, like "Thestalos the Firestorm Monarch".

• You can activate the effect of "Lifeforce Harmonizer" during the Damage Step.

• The effect of "Lifeforce Harmonizer" can only be chained to the activation of a card when that card would inflict damage. You cannot activate it when "Wave-Motion Cannon" is first activated, since it is not inflicting damage. You cannot activate it when "Wave-Motion Cannon" is sent to the Graveyard, since you are not activating a card. The same applies to other Continuous Spell/Trap Cards that inflict damage.