When you take damage from an opponent's card effect: You can Special Summon this card from your hand, and if you do, inflict damage to your opponent equal to the damage you took, also both players take no further effect damage this turn.
Often used in Tea burn decks, this card can potentially deal more than 1000 damage per use. Using Eco, you can negate the damage received and further effect damage your opponent does for the rest of that turn.
Maybe, maybe not. It doesn't actually that suck when facing decks other than burns unlike Lifeforce Harmonizer. 1700 ATK is still tied with some popular unboosted standard beater like Sonic Duck and can get over utility cards like Electro/Mirage Dragon