TJS Lifesteal/Lifeforce

After many iterations of trying to get Lifeforce decks to work, I have stepped it back a bit to just using the 2 stars of the new Set 2 Lifeforce keyword, Katra, the Devoted & Bloodcall Invoker. Katra acts as a proc-based Xenan Obelisk and Invoker can generate units/card advantage with each turn once the engine is running. Unchecked, the deck can quickly snowball and overthrow even the strongest stall decks like Big Combrei.