Something I randomly came up with, probably needs a lot of tweaking. I have not come up with casting costs or attempted much balancing yet. They were loosely designed around a cost of 6 to 8 quanta, and I have not delved into differentiating between unupgraded and upgraded costs/atk/hp/ability strength. Any constructive input would be appreciated.
Entropic Beast - 5|4 - Each turn, gains random ability with cost of 2
and random passive ability.
Undead Beast - 5|3 - Each turn, generates a Virus (60%) or Vulture (40%) if a creature died this turn.
Gravitic Beast - 3|6 - Each turn, a random creature you control gains +1|+2.
Earthen Beast - 4|5 - Each turn, you gain 2 max HP.
Empathic Beast - 3|3 - Each turn, gains +1|+1.
Flaming Beast - 6|2 - Each turn, deals its ATK to a random enemy creature.
Aqueous Beast - 5|5 - Each turn, freezes a random non-quantum producing enemy permanent for 2 turns.
Glowing Beast - 0|5 - Each turn, its ATK becomes your HP/10, rounded down. Airborne.
Floating Beast - 4|4 - Each turn, double the ATK of random airborne creature you control. Airborne.
Ageless Beast - 2|4 - Each turn, your permanents' effects happen twice.
Shadow Beast - 6|5 - Each turn, opponent shuffles a random card in hand into deck, then draws a card for each one shuffled.
Ethereal Beast - 3|3 - Each turn, a copy of a creature you control is put into your hand.
Updated names from Avatar to Beast because of existing series.