You should use an overhead light in a dark room to spot things like indents and dings on the card which can significantly hurt your chances at a high grade
The blue-green frogs of Bloomburrow played around in blink territory (get it, they bounce themselves?), but most frogs basically exist as a worldbuilding tool for various Magic sets
81933259 Beastly Mirror Ritual 675
As far as cards to pitch to Force are concerned, Mantis Riders, Phantasmal Images, Reflector Mages, Meddling Mages, and Unsettled Mariners (potentially) are on the roster
If you discarded them from your hand, you could activate their effects, which basically allowed you to do stuff like destroy cards on the field or summon a monster from the graveyard
WotC has listened to fans before