how to use MST and Book of Moon?

MST Does not negate the activation of spell and trap cards, it will only work if used on continuous or equip spell or trap cards. It is advised that you use it immediately on any face down trap or spell card your opponent has down. Book of moon can negate an attack by flipping the attacking monster face down. This includes your own monster in order to negate traps such as dimensional prison or magical cylinder. Book of moon can also be used to destroy equip magic and trap cards because cards cannot be used on face down monsters. Book of moon can also negate the effects of spells, traps, and effect monsters that specify battle position such as book of moon being chained to flip one of your monsters face down so that it is not destroyed by mirror force.

MST and Book of Moon are both chain able to what you just said. You can also chain Book of Moon to monster effects and attacks.

Also if you activate MST to a spell or trap card it will NOT negate it. Sorry, kiddo.

Hope I helped!

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yes, they are both chainable to all those but "mst" dosent negate the effect of the destroyed card, it just destroys it.the effect of that card will then resolve.

secrets: "mst" is just a card that destroys a spell or trap on the field.it is useful for getting rid of continuous cards like "skill drain" or "burden of the mighty".Also, it gets rid of cards like "mirror force" or "torrential tribute".

"book of moon" is useful for either stopping the effect of a monster on the field, stopping its attack but also resetting one of your monster's flip effect.it can also help get rid of a strong monster if you have a monster who has an effect that automatically destroys facedown monsters like "sakuretsu samourai" or simply "tankroid".

XD :P