If you have seven or more cards in your hand, Jin-Gitaxias can be transformed into its saga side for four mana
Magnezone is the only real threat , but if you can take both of them out, you'll have no problem closing out the game
Uncommons are $1
However, if instead the creature's power is increased to 3 or greater after the ability resolves, it still can't be blocked that turn
More aggressive decks might make use of the Tomb of Annihilation, since it drives down both players life totals and resources with the rewards of a 4/4 with deathtouch at the end
For example, if you put Necrodominance (an enchantment that says your maximum hand size is five) onto the battlefield and then activate Tamiyo, Seasoned Scholar's last ability, you'll have no maximum hand size