Looks pretty balanced at first, but searching for any land instead of just a basic has usually had a premium cost (Reap and Sow)

Spiritual Martyr
Creature - Human
If damage would be dealt to a creature you control not named Spiritual Martyr, that damage is dealt to Spiritual Martyr instead.
When Spiritual Martyr dies, create a 4/4 black and white spirit creature token with flying.
0/4

Yredelemnul, the Black Torch
Legendary Planeswalker - Yredelemnul
{+1} Put a -1/-1 counter on target creature.
{-1} Until your next turn, when target creature dies, return it to the battlefield under your control.
{-6} You get an emblem with wither, lifelink, and "At the beginning of your end step, this emblem deals 1 damage to target player and each creature and planeswalker they control."
{3}

Gozag, the Greedy
Legendary Creature - God
Indestructible
Whenever a nontoken creature dies, create a treasure token.
Gozag, the Greedy isn't a creature unless you control 4 or more treasure tokens.
6/7

Sword of Zonguldrok
Artifact - Equipment
Equipped creature gets +3/+0.
Whenever a creature dealt damage by equipped creature this turn dies, return that creature to the battlefield under your control.
Equip

Whoops

Concentrated Strike
Instant
Target creature gets +4/+4 until end of turn. Exert it.

Can I use this on an opponent’s creature to stop it from untapping?

in theory, yes. in practice it's very rare that that's going to be a better use than as a combat trick.

Black Torchlight
Instant
Creatures your opponents control get -1/-1 until end of turn. Zombie and Skeleton creatures you control get +1/+1 until end of turn.

We swore that zealous persecution was going to be worth money one day, lol

Your card gives me an idea for a card that can either heal you or damage an undead creature, like holy light in Warcraft. Maybe we could use a batch keyword for undead (like how outlaws work in thunder junction), has this already been done?

Kind of a color stretch


Unholy Light -
Instant
Choose one-
Target undead creature gets +0/+3 until end of turn
Target non undead creature gets -0/-3 till end of turn

I don't like that it's a card that's only castable if you have undead, but also often doesn't care about the buff.

I was definitely really conservative in pushing Black Torchlight, and it'd probably be fine as an uncommon at .

It’s modal I was just lazy with the template

oh my reading comprehension is 0, I thought it did both.

A card for commander:
Bloodletter
Creature - Vampire
Damage dealt to your opponents has lifelink.
4/4
"Don't worry, you won't go to waste."

I get the intention: any damage to opponents from sources without lifelink would cause its controller to gain that much life. Could cause rules weirdness if you had something similar to Archetype of Endurance that stopped sources from having lifelink

It's punchy—very high YMtC factor—but I feel like, in practice, Exquisite Blood does this much more clearly without enough being different to warrant the confusion.

The key difference is how this card works in multiplayer, by encouraging your opponents to attack your other opponents, which is why I made it this way as a card for commander.

Fair enough, but damage itself doesn't have lifelink. I think the wording should be "Damage caused to your opponents also causes the controller of the source of that damage to gain that much life."

The best phrasing I can come up with is "Sources dealing damage to your opponents have lifelink."

Orb of Guile
Artifact
Spells you cast that target permanents or players cost less to cast.
Its insipid whispers weaken magical defenses and render foes more susceptible to hexes.