Official The Leaf/Mist/Sand/Stone/Cloud Council Ruling

[MJM]

For a Mission like M-892 The Leaf Council, it gives you the option of 3 effects. You must select which effect you are applying before you place the Mission on the chain. This means, as soon as you play the Mission, you must declare which effect you want to activate.

[Laughing_Man]

Originally Posted by MJM

For a Mission like M-892 The Leaf Council, it gives you the option of 3 effects. You must select which effect you are applying before you place the Mission on the chain. This means, as soon as you play the Mission, you must declare which effect you want to activate.

This is true.