That seems more efficient than similar cards that do 1 damage only, like the Electrostatic Field that ships with the deck

Promo): 0A Venusaur: 0B Caterpie: 0C Metapod: 0D Butterfree: 0E Weedle: 0F Kakuna: 10 Beedrill: 11 Ekans: 12 Arbok: 13 Nidoran Female: 14 Nidorina: 15 Nidoqueen: 16 Nidoran Male: 17 Nidorino: 18 Nidoking: 19 Zubat: 1A Golbat: 1B Oddish: 1C Gloom: 1D Vileplume: 1E Paras: 1F Parasect: 20 Venonat: 21 Venomoth: 22 Bellsprout: 23 Weepinbell: 24 Victreebell: 25 Grimer: 26 Muk: 27 Exeggcute: 28 Exeggutor: 29 Koffing: 2A Wheezing: 2B Tangela (GB): 2C Tangela: 2D Scyther: 2E Pinsir: 2F Charmander: 30 Charmelion: 31 Charizard: 32 Vulpix: 33 Ninetales: 34 Ninetales (GB): 35 Growlithe: 36 Arcanine (Promo): 37 Arcanine: 38 Ponyta: 39 Rapidash: 3A Magmar: 3B Magmar (Fossil): 3C Flareon (GB): 3D Flareon (Jungle): 3E Moltres: 3F Legendary Moltres: 40 Squirtle: 41 Wartortle: 42 Blastoise: 43 Psyduck: 44 Golduck: 45 Poliwag: 46 Poliwhirl: 47 Poliwrath: 48 Tentacool: 49 Tentacruel: 4A Seel: 4B Dewgong: 4C Shellder: 4D Cloister: 4E Krabby: 4F Kingler: 50 Horsea: 51 Seadra: 52 Goldeen: 53 Seaking: 54 Staryu: 55 Starmie: 56 Magikarp: 57 Gyarados: 58 Lapras: 59 Vaporeon (GB): 5A Vaporeon (Jungle): 5B Omanyte: 5C Omastar: 5D Articuno: 5E Legendary Articuno: 5F Pikachu: 60 Pikachu (Jungle): 61 Pikachu (promo): 62 Pikachu (promo): 63 Flying Pikachu: 64 Surfing Pikachu: 65 Surfing Pikachu: 66 Raichu: 67 Raichu (Fossil): 68 Magnemite: 69 Magnemite (GB): 6A Magneton: 6B Magneton (Fossil): 6C Voltorb: 6D Electrode (GB): 6E Electrode (Jungle): 6F Electabuzz (Promo): 70 Electabuzz: 71 Jolteon (GB): 72 Jolteon: 73 Zapdos: 74 Zapdos (Fossil): 75 Legendary Zapdos: 76 Sandshrew: 77 Sandslash: 78 Diglett: 79 Dugtrio: 7A Mankey: 7B Primeape: 7C Machop: 7D Machoke: 7E Machamp: 7F Geodude: 80 Graveler: 81 Golem: 82 Onix: 83 Cubone: 84 Marowak (Jungle): 85 Marowak (GB): 86 Hitmonlee: 87 Hitmonchan: 88 Rhyhorn: 89 Rhydon: 8A Kabuto: 8B Kabutops: 8C Aerodactlyl: 8D Abra: 8E Kadabra: 8F Alakazam: 90 Slowpoke (Promo): 91 Slowpoke (Fossil): 92 Slowbro: 93 Gastly: 94 Gastly (Fossil): 95 Haunter (Fossil): 96 Haunter: 97 Gengar: 98 Drowzee: 99 Hypno: 9A Mr

Magic: The Gathering, a game that has captured the hearts and minds of players for decades, is a vast universe that constantly evolves
* Rings of Brighthearth triggered ability * Rings of Brighthearth triggered ability * Rings of Brighthearth triggered ability * Hanna, Ship's Navigator's activated ability So we can resolve one trigger at a time, and at the time we resolve the trigger we get to choose new targets for the copy
Rinse and repeat as much as you want
Usually, the other two colors will be unable to access that effect at all