Call the Night Swarm
Bat Colony rewards careful cave management and timing. When Bat Colony enters the battlefield you create a squad of 1 1 black Bat tokens with flying equal to the amount of mana produced from a Cave that was used to cast it, so the card scales with how deeply you have prepared your mana base. As an enchantment the body of work here is steady; it does not demand an immediate answer and it buys air superiority against ground heavy decks.
The follow up trigger that places a +1/+1 counter on a creature you control whenever a Cave enters the battlefield under your control makes Bat Colony a quiet engine piece for incremental growth and board resilience. In build choices where you lean into Cavern synergies the card becomes both token generator and a persistent buff source, useful in attrition matchups and in games where you need to convert mana investments into tangible board presence.
Card Details:
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Mana Cost – {2}{B}
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Card Type – Enchantment
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Subtypes –
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Card Text / Rules Text (Printed) – When Bat Colony enters the battlefield, create a 1/1 black Bat creature token with flying for each mana from a Cave spent to cast it. Whenever a Cave enters the battlefield under your control, put a +1/+1 counter on target creature you control.
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Power / Toughness – N A