Nice list, y'all! Since I began this challenge, I suppose I should add an entry.

The Great Spark

Legendary Creature - Elder Elemental

Affinity for Elementals

Flash

Trample, Haste

Whenever ~ attacks, each Elemental you control gets +1/+0 until end of turn for each other attacking Elemental you control

8/1

Keep it going!

Gonna consider the challenge to be wild.

Dwarven Brewmaster

Creature - Dwarf Artisan

Whenever ~ enters and during your upkeep, create a food token

Sacrifice a food: Target creature gets +1/+0 for each food you've sacrificed this turn and must attack or block this turn if able

1/2

Make an Elder creature of a creature type that doesn't yet have any elders

Llanowar Fae

Creature - Faerie

Flying

Whenever ~ enters, you may play an additional land this turn

: Add

1/1

Moar Fae!

I don't know lore very well, as you might be aware. So I read about Amonkhet on the MtG Wiki to try to complete this challenge. The most interesting part of the history section on that site was this:

"Amonkhet's leylines are weaker than other planes, pulsing like the veins of a dying animal. When given the chance to examine the leylines within Naktamun, Nissa describes them as "stunted"; not only are they artificially concentrated behind the Hekma, but the leylines of Naktamun are corrupted by a dark, virulent strain that subtly weaves itself through the leylines."

So to me, rebuilding Amonkhet might be approached by beseeching divine power for the purposes of mending the leylines.

(??)

Imonhopok, Holy Architect

Legendary Creature - Human Cleric Noble

Protection from Dragons and Planeswalkers

Whenever you tap a Land with a basic land type for mana, add one mana of any color that land could produce. If you control 3 or more Gods, add an additional mana of the same type.

: Target creature in your graveyard gains Embalm until end of turn. Its Embalm cost is equal to its mana cost.

: Draw a card, then discard cards equal to 3 minus the number of Gods you control.

3/7

I have no idea if this fulfills the challenge. But it's pretty sick, yeah?

Make a creature based on the Icelandic legend of Jólaköttur, the Yule Cat.

Google that shyt.

Walter Payton, the Sweetness

Legendary Creature - Human Athlete Warrior

First Strike, Haste, Menace, Skulk

Whenever a creature is assigned to block ~, he fights that creature

3/4

I probably could have just said "Haste, unblockable," but that wouldn't have done him justice.

Also, I recognize that this isn't exactly a great card, but could easily be the kind of jank someone needs to put together a great deck. And he's my favorite player from my favorite team.

Repeat the challenge. Choose an athlete from a sport other than American Football. Bonus points if it's an athlete from a non-American sport like rugby, cricket, Fútbol or something like that.