Necropotence cleanly draws a ton of cards given your life gain potential
Fossil Excavation!" When Hassleberry activates "Hunting Instinct", he announces "I activate my Trap Card, Hunting Instinct!" When Hassleberry activates "Jurassic Impact", he announces "I activate my Trap Card, Jurassic Impact!" When Hassleberry activates "Seismic Shockwave", he announces "Seismic Shockwave's effect!" followed by "I return a Dinosaur in my Graveyard to my hand!" When Hassleberry activates "Survival's End", he announces "I activate my Trap, Survival's End!" When activating the effect of that card, he announces "I activate Survival's End's effect from my Graveyard!" When Hassleberry activates "Survival Instinct", he announces "I activate my Trap Card, Survival Instinct!" When Hassleberry activates "Survival of the Fittest", he announces "I activate my trap
It doubles the ATK once per battle, then can attack another monster, which means its ATK can be doubled again
The lion's share of these cards steal spells by letting you exile then cast them, so you can pick up plenty of synergy from cards like Doc Aurlock, Grizzled Genius, Vega, the Watcher, and Passionate Archaeologist to make them sing