Elves are the best at going wide with tokens, ramping substantially, and pumping each other up as other elves enter (looking at you, Marwyn, the Nurturer)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.) If the target creature is an illegal target as Persistent Constrictor's first ability tries to resolve, it won't resolve and none of its effects will happen
Not only can you kill one of their creatures, you could also tap one the next turn to continue getting into the red zone
, Put a creature card exiled with Shelob into its owner's graveyard: Put two +1/+1 counters on Shelob
Remove two counters from Ghost-Spider: Exile the top card of your library