Soul counter

Soul counters are a type of counter introduced in Commander 2020. They have often been related to sacrificial abilities involving losing life or the death of a creature. 
==Description==
Soul counters first appeared on the <c>Netherborn Altar</c> in Commander 2020. It is an artifact with an activated ability to place a soul counter onto it alongside putting the player's commander into their hand from the command zone. As an additional cost, the player loses 3 life for each soul counter on the artifact. This represents sacrificing life to the altar. They appeared shortly thereafter in Core Set 2021 on <c>Malefic Scythe</c> was an equipment artifact that enters the battlefield with a soul counter on it and gains another any time its equipped creature dies. The equipped creature gains +1/+1 for each soul counter on it. This represents the scythe absorbing the soul of those that wield it. 
In Innistrad: Midnight Hunt, soul counters appeared on the land <c>Hostile Hostel</c> which could sacrifice a creature to add a soul counter to it. These were used for the transform mechanic in that it would transform into <c>Creeping Inn</c> once 3 or more of the counters were on it. Following that they appeared in Streets of New Capenna on <c>Obscura Ascendancy</c> which is an enchantment that gains a counter if a spell is cast with a mana cost of 1+ the number of counters on it. Alongside the counter addition, it also creates a 2/2 Spirit creature token. If 5 or more counters are added, then all spirits get powered up with +3/+3.
==Trivia==
*In Magic Online, the counter is colored green as its considered a positive effect. It shares an icon with Corruption, Death, Despair, Doom, Mannequin, Paralyzation and Petrifications.
==References==