I got this from a PM
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Have a heated debate here IRL. Chains of Agony was hidden on my mage. I moved my mage two zones with him watching me. I took my hand off my card. He then looks at me, oh I need to reveal that Enchantment.
He is saying that I didn't give him a chance to reveal his Enchantment before I move. Which I consider to be removing my hand from my card after moving.
In a causal, meh, but how would this be handled in a tourney?
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My Response
Player A say that they are going to activate the creature and turns the marker over.
Player A is not required to state what the action will be.
Player A then asks if the other player wishes to active any enchantments.
If nobody wants to then Player A does a move action. If the other player states that they want to reveal CoA can be revealed or not but it will not affect the previous move action (the move action trigger has passed)
Player A say that they are going another action for this same creature. They do not state if it is a Guard, QC, move or quick attack. Player A then asks if the other player wishes to active any enchantments.
Player A must give time between each part of the full action for any other player to reveal enchantments, but if this was done you do not go back and ask again now that the other player knows what Player A is going to do.