Scroll of Wonders cast Ice Fishing, which in turn drew Toki.
Scroll of Wonder reads: Cast a random spell. Draw a card. Cast this when drawn.
So when drawn, Scroll of Wonder is cast. The card then casts a random spell (Ice Fishing in this case, but no murlocs in the deck, so no further draw) Then it draws a card from the top of your deck (Toki, Time-Tinker)
Anger is the punishment we give ourselves for someone else's mistake.
For some reason I thought I drew another card after Toki, but my screenshot clearly says I didn't.