Some ideas for new cards and mechanics. Names are placeholders:
Gemini: prey, +5 points, 5 health. Will escape before digestion if they are not with their twin.
Desparado: prey, +15 points, 10 health, eats other prey in the same stomach and begins digesting them before digestion, Acts as a predator with 1 stomach capacity and 3 digestion. Instead of giving you points when it digests prey, it gains that many points in health. 50% chance to escape if its stomach is empty. Upon being digested its stomach contents are released.
Eager stomach: effect card, costs 1 energy. Predator uses digestion attack immediately instead of at the end of the turn.
Long way out: effect card, costs 2 energy. All prey within a predator gains +2 digestion resistance, doesn't take up any capacity, and will escape after 3 turns, but cannot escape on its own.
Bottomless: effect card, cost 3 energy, pred has unlimited capacity for one turn. If they remain over capacity after digestion, their digestion is reduced by the excess capacity.
Alice: pred, cost 3 energy. 5 capacity and 6 digestion. -1 digestion for each capacity filled. Leveling up increases both capacity and digestion by 3.
Barbara, pred, cost 1 energy. 1 capacity. 8 digestion. gets points for keeping live prey in her stomach after digestion. Gets no points for digesting prey. +1 capacity and -2 digestion when leveled up.
Clairissa, pred, cost: 5 energy. 8 capacity and 8 digestion. Every digested prey reduces capacity and digestion by 1, down to a minimum of 1. Levelling up doubles current capacity and digestion.
Darya, pred: cost: 4 energy. 2 capacity and 3 digestion. Digested prey gives you energy on your next turn instead of points. Leveling up increases capacity and digestion by 1.
Elise, pred: cost: 0 energy. 0 capacity. 0 digestion. Can absorb one other predator per turn to gain their capacity, digestion, and current prey. Level up to give her the ability to do so 2 or 3 times per turn.
Flora, pred: cost: 3 energy. 0 capacity, 2 digestion. Whenever prey are drawn, eats the weakest among the newly drawn ones and makes them take no capacity. Level up to eat the 2 or 3 weakest instead.
---------
Mechanics:
Battle mode. Either 2 human players or a human vs computer. All prey and predators are given both prey and predator stats. Predators may be fed from the hand if they themselves are not in a stomach for free. or eat friendly or enemy predators. Predators may eat other predators in the same stomach. Predators take up extra capacity for the amount of food in their stomach. If a predator is digested, their prey is released in the stomach that digested them. Redraw hand and redraw prey are the same.
anti-buffet: play as prey and try to lose. Either another player or the computer plays as pred but you get to decide where the prey goes. Try to minimize the number of points E.G. Putting healer in weak preds to jam them, putting Ellen in preds with 2 capacity, etc. However, the other player or computer decides when to end the turn. Can also play against the computer with it stuffing the wrong prey down your preds throats.
Deckbuilder: decide the ratio of each card to play with.
Point energy mode. Instead of gaining energy in subsequent turns automatically, you gain energy whenever you gain points. Note that energy is still "use it or lose it."