Indestructible

[Hakuu]

My buddy got some indestructible cards, how am I supposed to kill these things if it can't be destroyed and lethal damage doesn't work?

[Kuberr]

My buddy got some indestructible cards, how am I supposed to kill these things if it can't be destroyed and lethal damage doesn't work?

-1/-1 counters kill them.

[GoJuDragon]

{Black suns zenith}
{Tragic slip}
{Dismember}
Stuff like that

[Imdowd80]

Negative counters (infect). {oblivion ring} mass removal spells. Force him to sacrifice a creature. Eldrazi with annihilator

[scarsabrex]

Negative counters (infect). {oblivion ring} mass removal spells. Force him to sacrifice a creature. Eldrazi with annihilator

mass removal that say destroy don't work fyi.

[Kuberr]

Negative counters (infect). {oblivion ring} mass removal spells. Force him to sacrifice a creature. Eldrazi with annihilator

mass removal that say destroy don't work fyi.

{Terminus}

[scarsabrex]

i specified that say destroy. i didn't say all mass removal does not work.

[BlackJester]

{Geth's Verdict} and {Barter in Blood} effects work too.

[Kuberr]

And that's my response to you. Lol

[scarsabrex]

you respondd with an agreement?

[Gorzo]

The short version:

Exile.
Reduce its toughness to 0.
Force it's controller to sacrifice it.

You just can't use damage or "destroy" effects, is all.

[Hakuu]

Ok now that I know that you can kill them with neg counters, how do I prove that to him? I've been reading in the rule book and it doesn't say anything about it.

[scarsabrex]

indrstructible says this creature cannot be destroyed.

-x/-x shenanigans don't destroy.

rules say if a creature has 0 toughness it goes to the graveyard.

[BlackJester]

Ok now that I know that you can kill them with neg counters, how do I prove that to him? I've been reading in the rule book and it doesn't say anything about it.

I'll get you started:

700.4. If a permanent is indestructible, rules and effects can't destroy it. (See rule 701.6, "Destroy.") Such permanents are not destroyed by lethal damage, and they ignore the lethal-damage state-based action (see rule 704.5g). Rules or effects may cause an indestructible permanent to be sacrificed, put into a graveyard, or exiled.

[Gorzo]

Ok now that I know that you can kill them with neg counters, how do I prove that to him? I've been reading in the rule book and it doesn't say anything about it.

It's not just counters, either. Anything applying negative attributes to toughness that reduces it to 0 or less, from infect/wither/counters, to "until end of turn" spells like {grasp of darkness}, to static enchantments like {curse of death's hold} or one's own {heartless summoning}.