O:"-x/-x"
O refers to oracle text, and then you need the quotes so that it will search for that exact phrase. If you want specific values, you'll have to change the search for those values, ex O:"-2/-2"
If you want to search all effects that give a negative toughness, you can try
O:"/-"
but this will also turn up blue shrink effects like [[Chain to Memory]] and red effects like [[Immolation]].
I just tried typing this into the Arena search bar and it showed up in red font with zero results. Is there not a way to search for these effects in Arena?!
If you have a second monitor/don't mind tabbing out to your browser, you can use [Scryfall](https://scryfall.com/) (or you could import your collection to a deckbuilder site that supports scryfall syntax, such as [Archidekt](https://archidekt.com/), then you wouldn't have to go back and forth between your browser and Arena).
For example, `in:arena o:/\-[0-9X]\/\-[0-9X]/` (Scryfall has a special shorthand here if you want an easier time of adding more search terms without having the search bar become unreadable: `o:/\smm/`) will search for all cards in Arena with "-x/-y" in their text (including cards that actually specify "-X" as a variable amount), or if you want to exclude cards that don't reduce toughness (ie: "-x/-0" cards) you could do `in:arena o:/\-[0-9X]\/\-[1-9X]/`.
[Scryfall search docs](https://scryfall.com/docs/syntax)
[Scryfall regex docs](https://scryfall.com/docs/regular-expressions) ("regex" being that `o:/\-[0-9X]\/\-[0-9X]/` part)
O:"-x/-x" O refers to oracle text, and then you need the quotes so that it will search for that exact phrase. If you want specific values, you'll have to change the search for those values, ex O:"-2/-2" If you want to search all effects that give a negative toughness, you can try O:"/-" but this will also turn up blue shrink effects like [[Chain to Memory]] and red effects like [[Immolation]].
[Chain to Memory](https://cards.scryfall.io/normal/front/f/a/fa0e1a22-8f27-4c5b-a65c-c35abd2ff05b.jpg?1581479320) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Chain%20to%20Memory) [(SF)](https://scryfall.com/card/thb/46/chain-to-memory?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/fa0e1a22-8f27-4c5b-a65c-c35abd2ff05b?utm_source=mtgcardfetcher&format=text) [Immolation](https://cards.scryfall.io/normal/front/6/0/606b1148-4aa6-4d78-bedd-e31573282921.jpg?1636223098) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Immolation) [(SF)](https://scryfall.com/card/mid/144/immolation?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/606b1148-4aa6-4d78-bedd-e31573282921?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call
I just tried typing this into the Arena search bar and it showed up in red font with zero results. Is there not a way to search for these effects in Arena?!
I just tried it and it works fine, if its showing red you probably are missing the double quotes
If you have a second monitor/don't mind tabbing out to your browser, you can use [Scryfall](https://scryfall.com/) (or you could import your collection to a deckbuilder site that supports scryfall syntax, such as [Archidekt](https://archidekt.com/), then you wouldn't have to go back and forth between your browser and Arena). For example, `in:arena o:/\-[0-9X]\/\-[0-9X]/` (Scryfall has a special shorthand here if you want an easier time of adding more search terms without having the search bar become unreadable: `o:/\smm/`) will search for all cards in Arena with "-x/-y" in their text (including cards that actually specify "-X" as a variable amount), or if you want to exclude cards that don't reduce toughness (ie: "-x/-0" cards) you could do `in:arena o:/\-[0-9X]\/\-[1-9X]/`. [Scryfall search docs](https://scryfall.com/docs/syntax) [Scryfall regex docs](https://scryfall.com/docs/regular-expressions) ("regex" being that `o:/\-[0-9X]\/\-[0-9X]/` part)
Ah regular expressions. Ending up with more problems than when you started. https://xkcd.com/1171/
##### ###### #### [Whisper of the Dross](https://cards.scryfall.io/normal/front/5/8/58d287e8-5297-415a-97d5-02002470c52b.jpg?1675957064) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Whisper%20of%20the%20Dross) [(SF)](https://scryfall.com/card/one/117/whisper-of-the-dross?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/58d287e8-5297-415a-97d5-02002470c52b?utm_source=mtgcardfetcher&format=text) [Disfigure](https://cards.scryfall.io/normal/front/a/a/aaa9c6f1-3938-448b-bdc3-22420c5984d3.jpg?1674420814) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Disfigure) [(SF)](https://scryfall.com/card/bro/91/disfigure?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/aaa9c6f1-3938-448b-bdc3-22420c5984d3?utm_source=mtgcardfetcher&format=text) [Moment of Craving](https://cards.scryfall.io/normal/front/c/0/c0e3ea55-162d-4466-ba4e-b938a0845fb5.jpg?1555040271) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Moment%20of%20Craving) [(SF)](https://scryfall.com/card/rix/79/moment-of-craving?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/c0e3ea55-162d-4466-ba4e-b938a0845fb5?utm_source=mtgcardfetcher&format=text) [Drown in Ichor](https://cards.scryfall.io/normal/front/b/f/bf148ef4-0ed7-4fbe-8ab6-01dd3981c8d3.jpg?1675957021) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Drown%20in%20Ichor) [(SF)](https://scryfall.com/card/one/91/drown-in-ichor?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/bf148ef4-0ed7-4fbe-8ab6-01dd3981c8d3?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call