Thoughts on Cardinal | Cardinal (http://elementscommunity.org/forum/index.php/topic,34224.0.html)
Small other creature
Cardinal Affinity: If Mark is Cardinal gains Immaterial. If Mark is Cardinal gains Momentum. If Mark is a card is drawn. when Cardinal is played, If Mark is Choas Seed or Chaos Power is cast on Cardinal.
4 :Cardinality: Target in hand card's cost is reduced by number of cards in your hand.
Theme:
Pun. The activated ability does not fit all of the cardinal element themes.
Balance:
Cardinal Affinity and the base stats alone deserves a slightly higher cost. ~1.5

, ~.75

, ~1.5

, ~1

. A casting cost of 3-4|3

would more expected for Cardinal Affinity + Stats.
Cardinality is ... potent. As an Aetheric effect it will see usage with Fractal. Since it uses

quanta it will be used with Quantum Pillars. Estimated conversion would be 4

-> -8

casting cost. A Dragon fractal would cost 4

+ 2

per Crimson Dragon.
Complexity:
Cardinality and Cardinal Affinity might work better as separate cards. On the other hand they might not.
Other Comments:
Cardinality is ... potent.