Mark Of Life
Enchantment - Aura
Enchant permanent
Enchanted permanent has lifelink.
Elori has anoints his champions with a special mark said to provide vitality. Few of the anointed think to ask to whom it provides vitality.

I dunno, maybe this should be a common. I just like the idea of taking a super basic design and breathing new life into by letting you attach it to whatever land/artifact/planeswalker's part of your crazy plan. Plus, it doesn't fall off of things that turn into creatures then turn back. Lifelink kind of sucks, but not all our cards can have high power levels. May as well make our jank have cool applications.

Auspicious Reversal |
Instant (U)
You gain life equal to the life you lost this turn. If you gained 5 or more life this way, put a 1/1 white Soldier creature token onto the battlefield for each 1 life you gained this way.
Victory is not always a simple affair. Sometimes you have to claw your way to it.

Eternal Dawn -
Instant
You gain 4 life. Then, if you have more life than your opponents, put a +1/+1 counter on each creature you control.
: Return ~ from your graveyard to the top of your library. Activate this ability only if your less life than your opponent.
The passage of day and night no longer held any meaning with the passing of Starstill.

Criteria - White uncommon lifegain, can't suck.

Confused, though it could probably stand to do one fewer thing than it does.

Shazzeh. Might be a tad aggressively costed, but that's an issue for development.

I'm going to vote for Echo. Though the card may need to make less soldier dudes.

I vote for Knifethrower.

Effigy

Echo's card wins! (Silly, as the criteria-setter has super votes in case of a tie)* It hasn't been added to the set though, because I'm not sure if I should/ how I would do that bit.
In any case, choose a new criteria Echo!

Also, we might want to put the tiebreaker conditions on the first page of one of these threads so they're easier to find.

Criteria: Common white instant or sorcery removal: i.e. Avenging Arrow.

Cloudshift

Instant (C)

Exile target creature you control, then return that card to the battlefield under your control.

"It is a sign. The sky is changing."
–Akaren, desert nomad

Clashes with Echo_Robin's Unshakable Resolve a little, but whatever.

Edit: I interpreted the criteria as "something that removes instants or sorceries." If it's "removal in the form of an instant or sorcery" then:

Banish

Instant (C)

Exile target creature.

In the boiling heat of Illpyre and the agonizing cold of Frostwynd, exile is a madman's idea of mercy.

Super Arrest
Enchantment-aura
Enchant permanent
Activated abilities of the enchanted permanent can't be activated unless they are mana abilities.
If enchanted permanent is a creature, it can't attack or block.
"The law extends beyond mere mortals."

Edit: Shoot, it started as a sorcery, but became this...I like this a lot.

Faith's Fetters?

Yeah, it's the latter, I'll fix that.

Forced Conversion
Instant
Target creature becomes an enchantment instead of any other type of permanent. Put an ascension counter on it.
In the (proper noun) [desert], it does not matter if you want Elori. It only matters if Elori wants you.

Instant
Exile target attacking or blocking creature with toughness 3 or more.

Banish the Darkness
Sorcery
Exile target black creature.

Sunrend
Instant (C)
Exile target creature with converted mana cost less than or equal to the number of creatures you control.
"In the end, the sun shall devour us all. But some ends come sooner than others." - Sunchaser priest