How does Wolverine's extra-card Attack bonus count cards, and can it repeat in dodge loops?

Question

Accepted Answer

Only cards drawn before Wolverine is played count, plus the three cards his own effect draws. Draws after he is played add nothing. Repliers say the extra-card wording also allows repeated dodge loops, as with Gambit's Stack the Deck, but this is not an official ruling and one poster reads it more narrowly.

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How does Wolverine's extra-card Attack bonus count cards, and can it repeat in dodge loops?