Amazoness Secret Arts’ fusion augmenting effect (after banishing from GY) seems not correct. The effect lets me send multiple Extra Deck monsters as material, despite suggesting only 1. And secondly, it does not stack onto some fusion effects correctly.
Bug reproduction steps
Activate Amazoness Secret Arts in your GY. That turn, if you use Polymerizatrion, you can send 2 Extra Deck monsters as fusion material, rather than just 1. Also, if you use some stipulating fusion cards like Fusion Substitute (normally only allowed to use cards you control), you cannot send an Extra Deck monster.
Screenshot OR error code
I believe this effect only allows 1 Fusion Material to be substituted with an Extra Deck monster under its circumstances.
Also, this effect should apply when using cards such as Fusion Substitute, letting me send an Extra Deck monster along with the original fusion effect’s stipulations.
What OS are you using