Take out the Seattle draft picks and it might work. (The Seattle second is likely to be #44 and the Toronto first is likely to be no earlier than #24, so that's not enough value with the Kraken giving up the best player in the deal plus another NHLer, which Timmins is not.)

Tatar is a ghost in the playoffs and would be a terrible addition. 52 playoff games 13 points. He isn't even a regular on the Kraken so how is he a 3rd liner on the leafs?