Brain Freeze (Blue)

Ice Fusion

Target opponent reveals their hand. If this was fused, put an action card with cost 0 from their hand on top of their deck.

The fuse effect of Brain Freeze is not optional. You must select a card if possible.
Action cards include any card with the type “Action”.
The opponent can not respond between revealing their hand and you selecting a card to put on top of their deck.

Fusion - Fusion is a new keyword that fuses one or more elements with an elemental card to give an additional effect.

You cannot reveal a card you are using to pitch to play the card. You pay resource costs before additional costs.
You may still play the card without paying the additional cost of Fusion.
You cannot reveal multiple cards to Fusion unless the card states you can (i.e a card with dual Fusion).
You cannot reveal a card that does not fit the criteria i.e you cannot reveal an Ice card to a Lightning Fusion card.
An Elemental card with Lightning Fusion is not a Lightning card/Element card. E.g you cannot fuse an Entwine Lightning with Entwine Lightning.
Defending with a card is not the same as playing and therefore you cannot fuse while defending with a card with fusion. Note, defense reactions are played in order to defend, paying their cost to do so. You can fuse a defense reaction card that has Fusion.

Cost0

Defense3

PitchBlue