my concise reviews of the concepts so far:
orb: rip off of psion? meh.
field: i do not understand the notes.
aura: the only card i like is the fire one, but its basically a copy of inferno aura (level 1 or 2 archives)
bra: i prefer them unequipped, personally.
pendant:
ok
been done before (overgrowth?)
feels more like darkness, and is another form of vampire needed?
mount: feels awkward
familiar: like the concept, but the cards seem underwhelming
resolve: awkward concept, fire and darkness are OP, life is interesting aside from the shield part, which is hard to envision
emblem: ok concept but the cards have all been done before
chain: i like the break concept, but the ideas thus far i do not like
crest: ok concept, like the air card, the others feel flat and/or out of place.
tune: like the music concept, the cards have been done before
suit: ? concept ? cards
coin slot: like the 0 cost cards affecting both players concept. a place for otherwise overly situational cards. the card ideas themselves are not the best ive ever made.
mantra: i do not understand the concept as stated, and the cards are not yet made.
gem: gem series already exists (not a slot, but still kinda spoken for), the
and
have been thought of before as shard ideas,
seems OK but is misnamed. the concept of limiting the buffing to the weapon/shield is kinda a turnoff
rune: my favorite concept so far, but i do not like the cards which have been made
so basically everything is flawed to varying degrees. my favorite concepts are 1) rune 2) familiar 3) coin, but as far as the cards themselves go, i think all of them, my own included, could come up with better cards.