Adam Vehige

"In the name of Tempus, Lord of Battles, you will die honorably in righteous fire."

Breath Weapon

Breath Weapon deals 2 damage to each non-Dragon creature.

Kuroki, Thief of Talents

Menace
At the beginning of your end step, target opponent may draw four cards. If they do, look at that player's hand and you may cast a spell from their hand without paying its mana cost. If they don't, put two +1/+1 counters on Kuroki.

Nissa, Who Shakes the World

Whenever you tap a Forest for mana, add an additional {G}.
[+1]: Put three +1/+1 counters on up to one target noncreature land you control. Untap it. It becomes a 0/0 Elemental creature with vigilance and haste that's still a land.
[−8]: You get an emblem with "Lands you control have indestructible." Search your library for any number of Forest cards, put them onto the battlefield tapped, then shuffle.

Narset, Parter of Veils

Each opponent can't draw more than one card each turn.
[−2]: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

For most, deadly. For a dragon, decadent.