Created for Challenge # 016.

I looked at what abilities one-drops are permitted to have. Tormented Soul and Goblin Fireslinger say 1 damage to a player every turn is okay, and Glistener Elf says 1 poison counter per turn on a 1-drop is okay, but Honden of Infinite Rage and Cunning Sparkmage say you can't hit a creature for 1 more than once for less than 3 mana. This card does it every other turn, like Chandra, Newly Sparked.

I think it's fine for a 1-drop planeswalker to not have an ultimate.

I'd agree with that. I'd think about this having both 1-damage and 1-poison, except that you'll normally want one or the other, so that's not really much stronger than either alone.

Is this just intended as a discussion of possible abilities?

I think this is way too good. Specifically, the 0 ability... when comparing to Glistener Elf there's a lot more ways to remove a creature than there is a planeswalker, and also this has haste and unblockable. Also, black is the best infect color. Also, the -1 is too good.

Thw -1 is too good? It's either a sorcery-speed Scar, or a Tormented Soul alternating with casting Scar on a mythic that can be attacked?

But this could alternatively be interesting if the [0] were [-1] as well. So you'd have to alternate the "lose 1 life" ability with either of the others.

Well, IMO it's too good because it's not just that. A lot of the time, you're not going to have to immediately use that, and you'll either +1 or 0 them depending on the game state. Then, when you need to -1 something, you've got a bunch of loyalty counters to work with. In a lot of games, it will act a lot more like a 1-mana Trigon of Corruption that you don't need to pay mana to activate or recharge. And when you don't need to do either of those things, you just sit back and poison them out. It's the -1 being on a 1-mana PW in addition to the other abilities that makes it too good, I think