Stop the Opponent Gaining Life Entirely There are black and red cards that prevent players from gaining life, which prevents the lifelink keyword from functioning
Token Triumph (Green-White) Ally yourself with Emmara and cover the battlefield with an army of tokens
With three colors in the mana cost, this will restrict the financial upside of this horny beast, but picking up any extra copies under $4 will make trading at your LGS a lot easier
(You may cast this card from your graveyard for its escape cost.) To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an escape cost), add any cost increases, then apply any cost reductions
Now, lets say we wanted to broaden our horizons a little bit
This rabbits engine works well with clone effects as well as flicker effects, producing a large number of rabbit tokens