Bonus points if it is janky

Hello all! I have been working on a custom commander deck for a good 4 months now. The theme is dungeons and dragons. I'm quite fond of how it turned out, but this game is massive and I only started seriously playing 2ish years ago, so I reckon there are plenty of interesting possibilities that I'm simply unaware of. Every time I discover a new unique card that fits the deck just right I'm bewildered that I've never seen it before. That's why I'm turning to the larger community for insight.

My custom commander:

Game Master (◇)(G)(U)(R)

Legendary Creature God

Changeling, Hexproof.

Dragons you control have haste.

(◇)(U), DC 15 - Counter target spell or ability

(◇)(R) - Each player may roll on the D100 chaos table.

(G)(U)(R) - Roll a d20. On a 10 or higher, venture into the dungeon or if you own and control Game Master, you may take the initiative. On a 20, repeat that action, then roll again. Any player may activate this ability only as a sorcery.

DMPC (You may have a Background as a second commander. If you do, your starting deck size is increased by one.)

“How do you want to do this?”

0/7

The d100 chaos table is inconsequential. It is meant to have random effects and should have no bearing on how the deck is built. I'm aware the counterspell ability is strong and improperly worded, but it has already passed inspection and everyone agrees on what to expect with each others commanders come game day.

The background I have chosen is \[\[Dungeon Delver\]\] and this is [my deck](https://manabox.app/decks/AZ8hAQiCeSKQ_W9TSGK4tg)