Jarvis Yu enjoys formats with deeper card pools (especially Legacy). Having made one Grand Prix Top 8 in Legacy, as well as going 13-2 in Grand Prix New Jersey, he has also managed to win his only Top 8. Jarvis lives outside Washington.
Revised (this is not the official symbol as set symbols were not around at this time)
Ravnica City of Guilds
Starting out, Jarvis thought that a 1/2 for one mana was good - because it was "more efficient" than a 1/1 for one. He quickly learned that cards with abilities, like Eternal Witness, even though they don't have the best power/toughness/mana ratio are much better.
Zigging when everyone else zagged helped Jarvis grow. He saw (with the help of a friend) a strategy that wasn't explicitly supported in Ravnica City of Guilds. This opened his eyes to how to look at future sets.
Winning Grand Prix Seattle Tacoma 2015.
Mulliganing when they shouldn't or not mulliganing when they should.
Know the match up and what you need to be effective in the early game. If you don't have that in your opening hand then ship it back.
Sealed: Jarvis runs 18 lands and looks for card advantage, big creatures and removal.
Play different decks, then settle on one and play against a lot of decks.
Build and play a pauper cube.
Jarvis mentioned a [card]Battle of Wits[/card] deck from Grand Prix Milwaukee 2002.
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