Authority: Community discussion
Official ruling confirmed: unknown
Source: Reddit: r/Yugioh101
Link: https://www.reddit.com/r/Yugioh101/comments/1wjbnue/if_opponent_target_on_field_dmoc_with_gaze_of/
Format: TCG
Status: resolved
Date: 18 September 2026

1. Question

A player asked about a interaction involving Gaze of Timaeus, Dark Magician of Destruction, and Effect Veiler.

The scenario is:

• The opponent controls a monster that is currently treated as Dark Magician.
• They activate Gaze of Timaeus, targeting that monster.
• Effect Veiler is chained to negate the target’s effects.
• The monster therefore stops being treated as Dark Magician.
• When Gaze of Timaeus resolves, can it still use that monster to Fusion Summon Red-Eyes Dark Dragoon?

2. Reddit Discussion

A commenter identifying as a Judge answered that Gaze of Timaeus will still resolve, but it will resolve without effect.

The reasoning given was that, because the monster’s effects have been negated, it is no longer treated as Dark Magician.

The commenter further explained that Gaze of Timaeus requires the targeted monster to correspond to the name specifically referenced by the Fusion Monster being Summoned. Since the monster is no longer treated as Dark Magician, the required name is no longer present.

Another commenter reached the same conclusion, explaining that there is no Fusion Monster that specifically lists Dark Magician of Destruction as the required name. Since the monster is also no longer treated as Dark Magician, it cannot be used to Fusion Summon Red-Eyes Dark Dragoon through this effect.

3. Summary of the Reddit Answer

Situation	Result
Gaze of Timaeus is activated targeting the monster	Gaze of Timaeus can be activated
Effect Veiler negates the monster’s effects	The monster is no longer treated as Dark Magician
Gaze of Timaeus resolves afterward	It resolves without effect
The monster can still be used to summon Red-Eyes Dark Dragoon	No
The monster is treated as Dark Magician when Gaze resolves	No

The important point in the discussion is that the monster’s name-changing effect is itself negated. As a result, when Gaze of Timaeus resolves, the monster no longer has the required name for the intended Fusion Summon.

4. Conclusion

According to the Reddit discussion, Gaze of Timaeus will resolve, but it will not Fusion Summon Red-Eyes Dark Dragoon if Effect Veiler has negated the monster’s effects and caused it to stop being treated as Dark Magician.

The Reddit Judge’s explanation is that the monster no longer has the required Dark Magician name when Gaze of Timaeus resolves. The other commenter reached the same result.

This post documents the Reddit discussion and the explanations provided there. The supplied discussion does not include a direct official Konami ruling, so the answer should not be presented as an independently verified official ruling.