CardName: Haven of Recess
Cost:
Type: Land
Pow/Tgh: /
Rules Text: {T}: Add {1} mana to your mana pool.
{T}: Remove a counter from target permanent.
Flavour Text:
Set/Rarity: ![Assorted] Frames Uncommon
Haven of Recess
U
Land
: Add mana to your mana pool.
: Remove a counter from target permanent.
Source
counter manipulation; land
Does the second ability seem like something that needs an additional mana in its activation cost?