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Any die rolls that have a numerical result

Tamiyo, the Moon Sage originally came to Innistrad from her home plane Kamigawa, so it makes sense that she hearkens back to some of the cards from the Kamigawa block we mentioned earlier by giving her controller an emblem with You have no maximum hand size (the second line of that emblem is perhaps the most devastating to your opponents, but you can read that line on your own)

Halvar, God of Battle / Sword of the Realms Halvar, God of Battle gives double strike to your equipped or enchanted creatures and lets you move auras and equipment around at the start of combat

Appropriately, White Mage's Staff is especially synergistic since it has a lifegain ability built in already