I started it but it became clear that Elves weren't the best topic as so many of the best ones hit similar areas
At lower rarities, there are cards like Attentive Skywarden and Elvish Vatkeeper, which do it by dealing combat damage
Good for all kinds of utility, from fetch lands to combo pieces

It looks as follows: Onix, Wailmer, Palpitoad, Kricketot, Aipom, Woobat, Ducklett, Swirlix, Alolan Grimer, Slugma, Chinchou, Cosmog (Unaware), Pancham, Drilbur, Tangela, Eevee (Follow My Tail), Duskull, Tympole, Flabb (Petal Blizzard), Alolan Sandshrew, Ponyta, Sunkern, Cosmog (Ascension), Psyduck, Trapinch (Dig), Oddish, Rufflet, Piplup, Alolan Vulpix, Rockruff, Stufful, Rowlet (Skill Dive), Phantump, Magnemite, Lillipup, Trapinch (Nest Building), Sneasel, Spheal (Body Slam), Alolan Meowth, Ralts, Passimian, Jangmo-o (Gnaw), Rowlet (Hide and Seek), Skrelp, Pikachu, Teddiursa, Nosepass, Litleo, Flabb (Floral Invitation), Spheal (Rollout), Natu, Palpitoad, Jangmo-o (Raging Claws), Deerling, Golett, Dewpider, Aipom, Onix, Tepig, Alolan Sandshrew, Snorunt, Koffing, Drilbur, Swirlix, Kricketot, Woobat, Ducklett, Helioptile, Cosmog (Unaware), Slugma, Wailmer, Pawniard, Togedemaru, Trapinch (Dig), Flabb (Petal Blizzard), Tangela, Duskull, Tympole, Piplup, Cosmog (Ascension), Ponyta, Crabrawler, Carvanha, Chinchou, Azurill, Rufflet, Oddish, Ralts, Sandygast, Spheal (Body Slam), Cottonee, Rowlet (Skill Dive), Phantump, Alolan Grimer, Magnemite, Eevee (Lead), Flabb (Floral Invitation), Sneasel, Natu, Trapinch (Nest Building), Spheal (Rollout), Passimian, Rowlet (Hide and Seek), Lillipup, Skrelp, Pikachu, Stufful, Pawniard, Litleo, Koffing, Nosepass, Snorunt, Rockruff, Deerling, Teddiursa, Golett, Dewpider, Helioptile, Carvanha, Tepig, Togedemaru This concludes the Sun & Moon series

It's a really fun platform
But in doubt the flashlight test is a pretty good indication of which is which (if you have both of them to compare)