Strangleroot Geist [Dark Ascension] Creature Fish its controller adds an additional

its controller adds an additional one mana of any color

Only bloodspill can end this now

When Boros Garrison enters the battlefield

Set: Modern Horizons 2 Type: Enchantment Rarity: Uncommon Cost: {2}{G} At the beginning of each end step

Set: Commander 2021 Type: Enchantment Rarity: Uncommon Cost: {3}{B} {B}

Strangleroot Geist [Dark Ascension] Creature Fish its controller adds an additionalSet: Dark Ascension Type: Creature Spirit Rarity: Uncommon Cost: {G}{G} Haste Undying (When this creature dies, if it had no +1 +1 counters on it, return it to the battlefield under its owner's control with a +1 +1 counter on it.) Geists of the hanged often haunt the tree on which they died.