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You can only use this effect of "Mathmech Induction" once per turn

Uncertain Doom: Zane's last move against Mad Dog generates a massive explosion and a very possibly lethal electric shock

However, several spinoff cards and a few errata later, there are now several virus cards allowed in regular play - see the very best below

Normal Deck 3.3 4 [4975] JP076 Chaos Phantasm Normal Trap Target 1 of your banished LIGHT Tuner s and 1 of your banished Level 8 or lower DARK non-Tuners

If theres a particular card you like, whether thats because of its gameplay effect or simply because you like the artwork, try looking at other cards with similar keywords or that are referenced in the text on the card