Of course, Tarkir: Dragonstorm has plenty of cool dragons you could fetch up with Tiamat, from Magmatic Hellkite to deal with troublesome non-basic lands to Shiko, Paragon of the Way to copy an important spell from your graveyard
Tap two untapped Wizards you control: Target creature gains flying until end of turn
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Krakens are a creature type most often tied to blue mana and are traditionally mana intensive late-game threats that offer potent abilities
There's also a consideration for commanders that give your opponents more choices to make, since it adds to the interactivity of the game
You can let your chosen target attack another player and deal lethal damage to them, then cast Settle in the end of combat step, when those creatures are still considered attacking but after damage has been dealt, to take out two birds with one stone