<p>No, you can't.</p>
<p>Flipping of the monster happens during the damage step.
During the damage step, only 2 types of cards or effects can be activated:</p>
<ul>
<li>Cards that change the atk or def value of a monster</li>
<li>Cards that negate the activation of a card or effect (simply negating the effect won't do)</li>
</ul>
<p>Compulsory Evacuation Device falls under neither category, so cannot be activated at this point. If you want to use it, you'll have to do so before the damage step, and before you monster is flipped face up.</p>
<p>You can find the components of the damage step under this link:
<a href="https://img.yugioh-card.com/uk/gameplay/damage.html" rel="nofollow noreferrer">https://img.yugioh-card.com/uk/gameplay/damage.html</a></p>

CC BY-SA 4.0
2022-04-12T08:00:06.923Z
2022-04-12T08:00:06.923Z
kyudosai
<p>In this example, I have an <em>Elemental HERO Woodsman</em> with 2000 DEF facedown, and a <em>Compulsory Evacuation Device</em> Trap Card facedown. If my opponent attacks with a monster that has 2100 ATK, would I be able to reveal my <em>Elemental HERO Woodsman</em>, then play <em>Compulsory Evacuation Device</em> in order to stop the attack from destroying my monster?</p>

<yu-gi-oh>
Can a trap card be activated after a monster is flipped face up?
GrayStriped
# Can a trap card be activated after a monster is flipped face up?

(Asked by: username_0 on 2022-04-07)

In this example, I have an *Elemental HERO Woodsman* with 2000 DEF facedown, and a *Compulsory Evacuation Device* Trap Card facedown. If my opponent attacks with a monster that has 2100 ATK, would I be able to reveal my *Elemental HERO Woodsman*, then play *Compulsory Evacuation Device* in order to stop the attack from destroying my monster?

**Tags:** yu-gi-oh


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## 1 answers

### Answer by username_1 on 2022-04-12. Score: 1 | Accepted answer

No, you can't.

Flipping of the monster happens during the damage step.
During the damage step, only 2 types of cards or effects can be activated:

* Cards that change the atk or def value of a monster
* Cards that negate the activation of a card or effect (simply negating the effect won't do)

Compulsory Evacuation Device falls under neither category, so cannot be activated at this point. If you want to use it, you'll have to do so before the damage step, and before you monster is flipped face up.

You can find the components of the damage step under this link:
<https://img.yugioh-card.com/uk/gameplay/damage.html>


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