perhaps make it:
All damage and status spells are reflected.
note: status spells include Adrenaline, unstoppable, quintessence, freeze, basilisk blood, etc.
only stat affecting spells can be cast like antimatter, blessing, rage pot. etc.
you could argue that unstoppable and basilisk blood are stat effect spells but they do cause a status effect. momentum and stasis, so those would technically be on the status affecting list.
Overall, the card is really cool, im worried that it would cause Crusader to be slightly OP, imagine adding 6 damage to titan upped, thats 14 damage.
crusader ability, crusader now has 14 attack and has momentum.
although still not chronically OP, but it still is a concern. Make it start with 2 damage instead of 3. for unnuped and 3 instead of 4 in upped. thats what id recommend, so then its not too too easy either.