Axebeak Talon Fetish

This appears to be the shriveled, carefully preserved claw of a young axebeak, a species of large, flightless predatory birds that stalk the Plain of Standing Stones. However, there are numerous lines of small, intricate symbols along the length of each talon. Anyone able to read the Nkosi tongue or cast a Comprehend Languages spell would be able to read these runes. They tell a story. A story of how Axebeak, one of the greatest hunters in the Turlaghh, lost his wings after he grew too bold and offended Mother Sorrow. She snatched away his wings, but Axebeak still had his powerful legs and incredible speed. This item, which appears to be a tribal fetish, seems to be able to convey some of Axebeak's speed to the wielder. 

Use an ACTION to break the fetish. Roll 1d4. 1: The fetish detonates in a burst of crackling blue arcane energy, The character attuned to the fetish must make a DC 14 DEX Saving Throw or take 1d6 Force Damage and be knocked prone, If they pass the save then they take half damage and are not knocked prone, Either way the fetish is destroyed, 2: The fetish unleashes several tendrils of crackling blue arcane energy, The character attuned to the fetish must make a DC 14 DEX Saving Throw or have their movement speed reduced by 10 Feet for 2 ROUNDS, If they pass the save then nothing happens, Either way the fetish is destroyed, 3: The fetish imbues the character with the speed of an axebeak for 2 ROUNDS, This includes the ROUND the fetish was activated on, The character’s movement speed increases by 10 Feet for 2 ROUNDS, The fetish then crumbles to ash, 4: The fetish imbues the character with the speed of an axebeak for 3 ROUNDS, This includes the ROUND the fetish was activated on, The character’s movement speed increases by 10 Feet for 3 ROUNDS, The fetish then crumbles to ash.