Loyalty counter

Loyalty counters are counters that are used to track the loyalty of planeswalkers. 
==Description==
Loyalty counters are almost exclusively connected to planeswalker cards and are usually added or removed to activate loyalty abilities. Other abilities can cause them to gain or lose loyalty as well. Planeswalkers enter play with the number of loyalty counters printed on their card due to an intrinsic ability, lose loyalty counters corresponding to damage dealt to them, and go to the graveyard when they have no loyalty counters on them as a state-based action.
 from Commander Masters is the first non-planeswalker card to enter the battlefield with loyalty counters on it.
==Rules==
==Cards that interact with loyalty counters==
Planeswalkers are only included in this list if they can interact with other Planeswalkers' loyalty counters, not just their own.
===Generic counter interaction===
===Other interaction===
==Trivia==
In Magic Online, the counter is colored green as it's considered a positive effect.
==References==