How to create your own pickupable ability's .

How to make it :

1. Build a very fast clock
2. Set a command block with " /clear @p < Item / Ability > 0 0 "
3. Tellraw command (not needed) /tellraw @p {"text":" "}
4. The effect's (you can also use /tp, /summon or any commands, I just used /effect as an example) that shall appear when the item is picked up by a player .
5. That easy, that simple !

Hope you all like it !