If this card is destroyed by battle and sent to the Graveyard: Target 1 Plant-Type monster in your Graveyard, except "Lord Poison"; Special Summon that target.
Rulings
Individual Card FAQs
No card called "Lord Poison" can be Special Summoned by "Lord Poison"'s effect; either the one that was destroyed and sent to the Graveyard as a result of battle, or another copy of "Lord Poison" that was already in the Graveyard.
WATER|
Level 4|[ Plant / Effect ]
ATK 1500|
DEF 1000