Growth counter

Growth counters are a type of counter introduced in Mirage. They have thus far been always tied to enchantments and represent some form of increasing effect each turn.
==Description==
Growth counters first appeared on <c>Malignant Growth</c> in Mirage. It is an enchantment which gains a Growth counter every upkeep. It then allows all opponents to draw a card for each counter while also taking damage for each. The counters appeared once again in Urza's Destiny for <c>Momentum</c> which was an aura enchantment which added a new Growth counter each upkeep while giving the creature +1/+1 for each.
They eventually re-appeared in Ravnica Allegiance on <c>Simic Ascendancy</c> which was an enchantment that had growth counters put on it whenever a +1/+1 counter was put on a creature. It also had an activated ability to create +1/+1 counters. It had an alternate-win condition once 20 or more Growth counters were on it.
The most recent usage of Growth counters appeared on <c>Paradox Zone</c> in Commander 2021. It was an enchantment that entered the battlefield with 1 counter. On the player's end step, the number of tokens would double and it would then create a green/blue Fractal creature token which got +1/+1 for each Growth counter on the enchantment. 
==Trivia==
* In Magic Online, the counter is colored green as its considered a positive effect and shares its icon with Fungus, Matrix, Petal, Polyp, Pupa, Rust, Spore and Vitality counters.
==References==