Action Card: What are them? Just Click The Spoiler.
From WIKIA:
An Action Duel can only take place if a Field Spell Card that allows the activation of Action Cards is active. When an Action Duel begins, Action Cards are disbursed in a fashion fitting the theme of the active Field Spell, which means the cards can be spread out immediately for the Duelists to find or can be made available at different times via the field's setting. Duelists can search for them during the Duel, and if they find an Action Card they can add it to their hand. Duelists can only hold on to one Action Card at a time. Each player has a time limit during their turn in order to keep them from stalling the Duel in a continuous search for Action Cards. While in the hand, Action Cards can be used to pay for discarding effects, so if a card effect requires multiple discards to activate, a Duelist can quickly find and discard consecutive Action Cards to preserve their hand. Action Cards can be activated from the hand during either player's turn. When a player adds an Action Card to their hand, card effects that activate when a card(s) is added to a player's hand can be used, as seen when Hokuto Shijima activated "Cosmo Arrow" in his Duel against Yuya.
Freeze Freezer
フリーズ・フリーザー
Action Card Explanation :
From WIKIA:
An Action Duel can only take place if a Field Spell Card that allows the activation of Action Cards is active. When an Action Duel begins, Action Cards are disbursed in a fashion fitting the theme of the active Field Spell, which means the cards can be spread out immediately for the Duelists to find or can be made available at different times via the field's setting. Duelists can search for them during the Duel, and if they find an Action Card they can add it to their hand. Duelists can only hold on to one Action Card at a time. Each player has a time limit during their turn in order to keep them from stalling the Duel in a continuous search for Action Cards. While in the hand, Action Cards can be used to pay for discarding effects, so if a card effect requires multiple discards to activate, a Duelist can quickly find and discard consecutive Action Cards to preserve their hand. Action Cards can be activated from the hand during either player's turn. When a player adds an Action Card to their hand, card effects that activate when a card(s) is added to a player's hand can be used, as seen when Hokuto Shijima activated "Cosmo Arrow" in his Duel against Yuya.
Freeze Freezer
フリーズ・フリーザー
This turn, any attack declared by an opponent's monster is negated.