Pokémon/Pokédex/Dratini

How to Evolve
Dratini evolves at level 30.

TM/HM

 * RB/Y/GS/C/RS/FL: Blizzard, Double Team, Fire Blast, Rest, Surf, Thunder, Toxic
 * RB/Y/C/RS/FL: Ice Beam, Thunderbolt
 * RB/Y/GS/C: Swift
 * GS/C/RS/FL: Attract, Frustration, Hidden Power, Iron Tail, Protect, Rain Dance, Return, Waterfall
 * C/RS/FL: Flamethrower
 * RB/Y: Bide, Body Slam, Bubblebeam, Double-Edge, Dragon Rage, Mimic, Rage, Reflect, Skull Bash, Substitute, Take Down, Thunder Wave, Water Gun
 * GS/C: Curse, Detect, Dragonbreath, Endure, Headbutt, Icy Wind, Sleep Talk, Snore, Swagger, Zap Cannon
 * RS/FL: Facade, Hail, Hyper Beam, Safeguard, Secret Power, Shock Wave, Sunny Day, Water Pulse

Breeding

 * GS/C/RS/FL: Haze, Light Screen, Mist, Supersonic
 * RS/FL: Dragon Dance, Dragonbreath

Other sources

 * Pokémon Stadium 2: Extremespeed

Trading Cards

 * Base Set #26 - Dratini
 * Team Rocket #53 - Dratini
 * Gym Heroes #42 - Erika's Dratini
 * Neo Destiny #60 - Dratini
 * Expedition #107 - Dratini
 * EX Team Rocket Returns #52 - Dratini
 * EX Team Rocket Returns #52 - Dratini