The reason the Gauntlet blows up itself and not the equipped creature is flavor stuff for what it's referencing. Having the ability itself instead of granting it to the equipped creature was just an odd oversight.

I cackle as I look around my lab, mixing some potions here, tuning a glove here, transmogrifying an assistant into an elemental monkey there, so on and so forth. But finally the inspiration strikes as I look out on the city. There's a pattern there. Not one I understand fully but one that inspires me. Drives me as I fabricate something to draw on the very soul of Ravnica itself...

Implicity Engine
Legendary Artifact
Whenever you cast an instant or sorcery spell, if it doesn't share a name with another spell you cast this turn, untap ~.
, : Add .
, , sacrifice ~: Reveal the top X cards of your library equal to the number of Instant and Sorcery spells you cast this turn with different names. You may cast any number of cards revealed this way without paying their mana cost.

I will go with a guild mage.


Izzet Exemplar -
Creature - Human Wizard
: Scry 1. Draw a card.
, Discard your hand: Search your library for an instant or sorcery card that doesn't share a name with a card in your graveyard, reveal it and put it into your hand. Then, shuffle your library.
: Add a combination of three and/or . Spend this mana only on additional or alternate casting costs.
Talent tempered with an unquenching thirst for knowledge and answers.
3/3

Mercurial Mirror —
Artifact Creature — Construct (C)
1/7
Whenever a player copies a spell one or more times, switch Mercurial Mirror's power and toughness until end of turn.
"It pleases me to find a robot as excited about innovation as I am."
—Niv Mizzet

What if you are in between?

Oops sorry Tek. Go with the Grand Innovator criteria. I thought I had included everyone.

Pipe Sweeper
Artifact Creature - Construct
Whenever Pipe Sweeper attacks, destroy target Aura attached to an Artifact.
3/5
Lazy lubers ladle on loads of lube layers, lacking liability. And when something breaks underneath all that? Someone's got to wash it off to allow access.

Arcing Sigil |
Artifact

: Add or . Whenever this mana is spent to cast an instant or sorcery spell with a converted mana cost of five or greater, create a token that is a copy of ~.

"Runes inscribed with plasma phoenix quills implode when overclocked, triggering the rebirth mechanism and multiplying their power twofold."
-Geral, Steam Augur

Tekka, just wanted to clarify that the sigil, keystone or guildmage needed to be Mythic.

Also, I would have graded this by now if I wasn't on vacation. I will grade soon.

Unstable Guildmage -
Creature — Weird Wizard (M)
At the beginning of your end step, sacrifice Unstable Guildmage unless you activated five or more abilities this turn.
: Draw a card.
: Unstable Guildmage deals 1 damage to any target.
4/3

Changed my entry’s name but otherwise the same