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So?

Disenchantment Grove
Land
~ enters the battlefield tapped.
T: Add 1 to your mana pool.
:g: :w: :1:,T, Sacrifice ~: Destroy target artifact or enchantment if you have threshold.

I like...

I think it needing thresh, 2 colors to activate and not making color mana would make it a lot less broken then simply comes into play tapped.

Maybe,

Disenchantment Grove
Land
~ enters the...

How about:

land

tap: add :1:
threshold
:g: :w: tap sac: destroy an artifact or an enchantment.

UU 1/1 flying flash faerie that stifles when it comes into play.

Or

BBBB enchantment
at your upkeep you lose 3 life
You cant draw cards, your opponents skips their draw step.