Her sacrifice was cheap and easy to activate, and youd be gaining more and more life every time you activate it, as the Hydra would get larger and larger the more lands you controlled
Astrologian's Planisphere This two-cost Blue artifact Equipment with job select Equip for 2 will make it a Wizard and then as you cast non-dorks, toss a +1/+1 counter here and then on your third card drawn each turn, not just yours - brilliant win con there for Spellslinger brews and Commanders for Commander Damage in Cantrips
Twitching Doll is also a strong ramp option, providing one mana of any color each turn, and can be sacrificed after stacking up enough nest counters to flood the board with aggressive token Creatures
Cards like Thrummingbird, Inexorable Tide, and even Unnatural Restoration and Serum Snare send you tumbling out of control
GANAX, ASTRAL HUNTER & FEYWILD VISITOR Now for something a little different: Ganax with the Feywild Visitor background