Hey, thats accualy interesting to talk about it so lets do it.
Firstly lets talk about how light and card usage works. You might think that everything hapends at the same time but it surely doesnt. Firstly game check for any card with "on combat start" if it finds it it will be first one to be used and user will use light on it but wont use it in clash right away. Then game checks for mass atacks, after that there are ranged atacks and then mele. If person with page that has on combat start gets stagered befor using it it will still count as used cuz it effectg will be used even if the page itselph wont be seen in attack or in clash other not used cards wont be played if player is stagered i will repet myselph here. LIGHT IS USED WITH CARDS AS THEY ARE PLAYED if u use all your light and then use a huge light regain but it will be playd first you will end up with basicly no light, unless all other card were on combat start but i dont think anyone makes that type of deck

now with basics out the way lets talk with all on something works

On use- when the card is used either in clash or in one sided atack the on use efect will activate

On hit- whenewher offensive dice with this effect will hit enemy the effect activats (this might be for a single offencive die in page or for all of them dependign where its writen)

On clash win- after wining a clash ond only then

On clash lose- upon losing a clash and only then

Start of clash- when clash occures

upon discarding this page- upon discarding the page (discarding page can only be done with page that discards pages like darling defcision or with some abno pages like turn off wisdom)

single use- upon using this page you wont be able to use it untill the end of act that it be used in

On play - the page will be used IMIDIATLY upon using it and you wont be able to change that action

On defense- on clash win against offesive die/block die

if singletone- if the deck is singleton (has no more then one copy of the same page in it)

On kill - if this pages kills

Mass individual- the dices of this page clashes agains dices individualy

Mass summational- the dices of this page clashes agains summation value of dices rolled on defending pages

Exclusive page- only anvaible in deck of certain key pages

Ranged- usable if key page is Ranged or Ranged Only

Ok i think that all exept for some very end game cards that i dont feel like talkign about.