Sub-Mariner attacks a support row Mr Freeze 6 drop from dc origins...does he ready?

ok.... since you're the primary player (since it's your attack), your Sub-Mariner's "ready" effect goes to the chain first... followed by your opponent's Mr. Freeze's "cannot ready" effect.

so, Mr. Freeze's ability will resolve first... saying that Sub-Mariner can't ready this turn.
then, Sub-Mariner's ability will resolve... but do nothing, since he cannot ready this turn.

awww...crap...thanks for the bad news purijerk...lol just playin...i got it thanks