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Once per turn, when you inflict battle damage to your opponent with this effect: You can draw 1 card

This phrasing is likely in order to specifically exclude cards that incidentally include in their Japanese names, such as "Clock Spartoi", as well as "Toy" spells unrelated to Yugi's deck

Having said that, Mask Change II is no joke, as it can allow non-HERO decks access to Masked Hero monsters

The last effect is hardly helpful, pretty much only if you have Plaguespreader in your hand (or Spirit Reaper, if you run that), and what you Summon is likely to die before you can use it

multiple times per turn, OTK-ing your opponent with Loading

Utopia Beyond isn't bad, but they likely have no face-up monsters, and gauntlet launcher is overkill because they likely only have 1 monster