Land destruction

[Subiskier]

If my opponent taps land to cast a creature and I destroy one of the lands so they now don't have enough to cast, is that creature spell 'countered' or does it just remain in my opponents hand?

[rarehuntertay]

Once a land is tapped for mana, nothing can stop it.

[Mr_Fahrenheit]

Even if you try and destroy it first there is still no way to stop them from simply tapping the land in response. Anything that produces mana (from tapping) cannot be countered, whether it be a land or a creature's ability.

[ibtrickey]

If it is an instant would it work? Just wondering.

[ibtrickey]

If my opponent taps land to cast a creature and I destroy one of the lands so they now don't have enough to cast, is that creature spell 'countered' or does it just remain in my opponents hand?

I do agree with this exact scenario it would still be cast because the mana is already in their mana pool.

[Pleeb]

Nope. Once you pay the cost of a mana ability (by taping the land or mana elf etc) the player gets that mana in their mana pool.  Anything you play to stop them from paying the cost can be responded to by simply taping the land or whatever for the mana.

[MuggyWuggy]

Tapping for mana doesn't allow a response
You just tap mana object and bam it's in mana pool

[Sparkle Ninja]

Could you instant in {Mana Short} in response to land tap?

[FustyDavorite]

You cannot respond to an opponent tapping land.

[Sparkle Ninja]

The dissappoint

[Anoobass]

Could you instant in {Mana Short} in response to land tap?

You could cast it when they pass priority during the upkeep step.  Would essentially do the same thing.  But unless your responding to an ability that is not a mana ability, {arbor elf}/{voyaging satyr}, there's nothing you can do.

[ibtrickey]

But that is an instant.. So you could not play that instant right when they tap their land?
I need some priority lessons then

[Anoobass]

To cast a spell or activate an ability (not a mana ability) priority must be passed.

[Pleeb]

Priority lesson #1:  go to the rules section of this app and read rule 116. It will be too lengthy and complicated to paste into this post.

Long story short: a player retains priority until they pass it. In other words, you can put as many objects as you can pay for on the stack before your opponent can respond. (Note they won't resolve until every player passes priority without adding anything to the stack). Once an object on the stack resolves, the active player receives priority. Using a mana ability or playing a land doesn't use the stack and resolves before any player can respond to it.

[Mr_Fahrenheit]

One more thing Pleeb, you forgot the word 'instants'. The first spell can be a sorcery but if you intend to play more spells on the stack before passing priority they must be instants.