"I didn't make any static effect tiles, and you shouldn't either."
Challenge accepted!
This is the Mutagen tile for Zack Freedman's open source marble board game Hextraction. It's a static effect that a) only adds options rather than removing them, b) only acts locally, and c) is small enough to be printed on the tile and not require a card. Those were my design limitations, and I hope that it's lead to a static effect that's simple and memorable enough not to cause decision fatigue.
While the Mutagen tile is on the board, any tile touching it can be overwritten by new tiles. It's a good way to get rid of an annoying blocker, or more, but watch out -- its ability doesn't affect itself, so any new tile going down around it might be short lived.
The design is intended to evoke both caution striping and the double helix of a DNA molecule.
Working on tweaking the design to make the lettering more readable.