MTG Salvation

I like the dethrone aspect, but +1 to toughness would be a good idea as well.
More of the cycle:
Doom 4BB
Legendary Creature - Zombie Elemental (M)
~'s power and toughness are equal to the amount of -1/-1 counters on creatures.
When ~ enters the battlefield or attacks, distribute 3 -1/-1 counters between one, two, or three creatures.
*/*

The +1 should be until your next turn, and the -6 doesn't seem that good, considering that players are probably in topdeck mode. Also, the -6 seems white.
Continuing the cycle:
Confusion 4UU
Legendary Creature- Illusion Elemental (M)
~'s power and toughness are equal to the amount of cards in your hand.
If a player would draw a card other than the first card in their turn, you draw a card instead.
*/*

A bit undercosted. Only 1B more than stab wound, and a lot more power, and that's already a good card. I would up the cost by 1 or B. But, what do I know?
NOTE: The following is part of a cycle.

Honor 4WW
Legendary Creature - Soldier Elemental (M)
~'s power and toughness are equal to the amount of soldiers you control.
1W: Put a white 1/1 soldier token creature onto the battlefield.
*/*

Ok, 1. This card is not dimir, but izzet. 2. Interrupt is not a real card type. 3. This is not spider-y in any way. 4. Level could easily be confused with level up.5. I think this card is too powerful at uncommon.

Mine was skipped, so...
Honor 4WW
Legendary Creature - Soldier Elemental {M}
Soldiers you control get +1/+1 for each other soldier you control.
1W:Put a white 1/1 soldier token creature onto the battlefield.
4/4

This is, in most cases, strictly worse than fog. The mana helps, but often you don't block, then fog. Sure, you can swing this to your advantage, but it's not easy.

Honor 4WW
Legendary Creature - Soldier Elemental (M)
Soldiers you control get +1/+1 for each other soldier on the battlefield.
1W: Put a 1/1 white soldier token creature onto the battlefield.
(4/4)

This might as well just be a creature.Otherwise, it's a planeswalker tutor, which is fine i guess.

Doom's Warrior 2BB
Creature - Warrior (U)
2B: Put a -1/-1 counter on target creature.
Whenever a creature with a -1/-1 counter dies, exile it instead. It's controller may put a 1/1 Sprit Token Creature with flying onto the battlefield.
3/3

Under your control would be desirable at the end.
MORE WALKERS

Ungar, the Invincible 7
Ungar, the Invincible cannot lose loyalty from combat damage.
(+1) Ungar has protection from all colors until end of turn.
(-12) You get an emblem with "Creatures and Planeswalkers you control have protection from a color of your choice. Choose this color at the beginning of your upkeep each turn."
(4)

So, 1. Special was barely a thing in vintage masters, and was reserved for only the best cards.
2. the +X ability seems a little to powerful
I really like planeswalkers, so why not another one.
(EDITED TO INCLUDE STARTING LOYALTY)
Ojir, Dragonblade 3RW
(+1) Put a 2/2 Red Dragon Creature Token with flying onto the battlefield under target opponent's control, then gain control of a dragon that player controls.
(-2) Destroy Target Dragon. Then, choose one-
- Put loyalty counters on ~ equal to destroyed dragon's power
- Target dragon you control gets +X/+X until end of turn, where X is the destroyed dragon's toughness.
(-8) You get an emblem with "Dragons you control are indestructable."
(5)

Personally, I think this should be common, or a 3/3 with Transient 3.

Vantil, Hunter 2GG
Planeswalker- Vantil
(+2) Put a 1/1 Green Hunter Creature Token with reach onto the battlefield under your control.
(-2) Whenever a Hunter creature you control deals combat damage to a player, draw that many cards.
(-8) You get an emblem with "Hunters you control have +3/+3 and Deathtouch"
(3)

Perfectly reasonable.
Vantil, Hunter 2GG
Planeswalker- Vantil
(+2) Put a 1/1 Green Hunter Creature Token onto the battlefield under your control.
(-1) Hunters you control gain +1/+1 and reach until end of turn.
(-8) You get an emblem with "Hunters you control have +0/+4 and Deathtouch"
(3)

Seems a bit too powerful for common, I would up the cost by 1, or make it uncommon.
Ok, here's mine.

Unj, Invisible 4UU
Planeswalker- Unj (M)
(0) Put loyalty counters on Unj, Invisible equal to the amount of creatures your opponents control.
(-7) Unj, Invisible becomes a X/X Human Wizard, where X is the amount of loyalty counters on Unj, Invisible. He's still a planeswalker.
(-15) You get an emblem with "Creatures you control have unblockable and hexproof."
(6)