Jarkath, Hydra Broodling

+2: The next Hydra that enters the battlefield under your control this turn enters with an additional +1/+1 counter.
-3: Target Hydra you control deals damage equal its power to target creature or planeswalker.
-9: You get an emblem with: "Whenever any number of +1/+1 counters would be put on a Hydra you control, put double that many counters on that Hydra."