Will - Pokémon Rulings Compendium

I use Psyduck's "Overthink" attack to cause flips to be treated as Tails whenever your opponent flips a coin on the next turn. But if my opponent plays Will, which allows the player to choose the outcome of the first coin flip required for an attack, does my opponent get to choose heads for their first coin flip or is it still tails due to "Overthink"?: Overthink will cause the flip to be treated Tails regardless of Will, since Overthink is in effect whenever your opponent flips.

Source: TPCi Rules Team (2024-01-04)

What happens if my opponent has Malamar with the "Contrary" Ability active and I play Will?: Will lets you choose the first flip for an attack as Heads, but then Malamar's Contrary will treat it as Tails.

Source: TPCi Rules Team (2022-03-03)

If I play the Will supporter that lets me choose heads or tails for my first coin flip of an attack, do I get to use Will's effect again if I use Glimwood Tangle stadium to reflip the coins?: Yes, if you use Glimwood Tangle, Will lets you choose heads/tails for the first coin of the reflip.

Source: TPCi Rules Team (2020-09-24)

If my opponent used Magnemite's "Mirror Shot" attack last turn, can I use the effect of Will to choose heads for the effect of the attack?: Yes, that is considered an effect of an attack, so that works.

Source: Cosmic Eclipse FAQ (2019-10-18), TPCi Rules Team (2019-10-31)

If my Pokemon is Confused, can I use the effect of Will to choose Heads for the Special Condition?: No, that isn't something that Will can affect.

Source: Cosmic Eclipse FAQ (2019-10-18), TPCi Rules Team (2019-10-31)