Tempest Magician
Counters won't be put on the object, but if the original event is entirely replaced (such as by applying Soul-Scar Mage's replacement effect), the original event won't happen
While specific, a flying mana dork is already not a bad get - but theres more
No matter what you're bouncing with Madam Mim, you ideally have Merlin, Shapeshifter on the board as well, who will gain extra lore value from questing every time a character returns to your hand
Some countries also allow voluntary registration even if your turnover is below the threshold
Of course, the dream is to hit a Carnosaur out of an Etali trigger, but at worst you can count on the former ability to kill pesky little creatures or planeswalkers by discarding it from your hand, which comes very handy when youre playing around counterspells other than Stifle