User blog comment:ArmorDragoWizardDrum/SDW Deck Help: URGENT!/@comment-25004901-20160125061804/@comment-4764137-20160125205705

I said I wasn't gonna pick a dog in this fight. I TOLD myself I wasn't gonna pick a dog in this fight. But I can't stand it anymore. You say they're logically consistent, but that's not true. Logically, the idea of "When this card attacks" being a Continuous ability is inconsistent. Let me explain why.

A Continuous ability is defined as something that is ALWAYS active, as long as any conditions are met. By definition, a trigger ACTIVATES something. Therefore, a Continous ability cannot be triggered. It must therefore be that any ability with a trigger must, by definition, be Automatic. It makes no sense that a continous ability be anything but passive. Anything that moves things around the field, or changes the board state on a trigger, cannot be continous.

As a side note, during any given play timing, all Automatic abilities on standby would be forced to resolve. Not one play timing at a time, but one CHAIN at a time. The playtiming itself doesn't have to repeat, that's not how you get multiple chains in a playtiming. During that playtiming, each automatic ability starts a chain, allowing a single reponse. In this case, BOTH options are perfectly valid options, depending on how/when they're played.

If the shield spell is used in response to Drum's ability to put a card into the soul, then yes, it's uncounterable.

However, if the shield spell is used to start its own chain, then yes, it's counterable.

The issue at hand is the players never specified their cast timing. That's all.