The effect is not white just because it has an escape clause.
The design principle behind the escape clause also is iffy. I'd rather have "Destroy target creature unless its controller sacrifices a Treasure." which at least would advance the game state.
It really sucks that this becomes a dead card if an opponent just happens to sit on a Treasure they have no opportunity of spending.
I also think the grammatically correct form may be "Overcost Taxes" though "cost" itself is not quite the right phrase.
Not sure if there should be a 'then' before 'there is an additional combat phase'
Also I don't know if you explicitly need to say 'this one' because it sounds like the combat phase hasn't ended when it has already. I'm probably overthinking it.
Card as is, it's a double edged sword when your opponents get the exact same bonus.
The effect is not white just because it has an escape clause.
The design principle behind the escape clause also is iffy. I'd rather have "Destroy target creature unless its controller sacrifices a Treasure." which at least would advance the game state.
It really sucks that this becomes a dead card if an opponent just happens to sit on a Treasure they have no opportunity of spending.
I also think the grammatically correct form may be "Overcost Taxes" though "cost" itself is not quite the right phrase.
May be way to strong tell me what you think about it
Small typo, neat card.
Not sure if there should be a 'then' before 'there is an additional combat phase'
Also I don't know if you explicitly need to say 'this one' because it sounds like the combat phase hasn't ended when it has already. I'm probably overthinking it.
Card as is, it's a double edged sword when your opponents get the exact same bonus.