Cheapest priced copy (Commander 2020): $0.59 at Card Kingdom, near mint, their price list as of .
Nimble Obstructionist 
Creature — Bird Wizard · 3/1 · Rare · Hour of Devastation · #40
Flash
Flying
Cycling {2}{U} ({2}{U}, Discard this card: Draw a card.)
When you cycle this card, counter target activated or triggered ability you don't control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.59 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 121 | Rare | $0.59 | — |
| Hour of Devastation | 40 | Rare | $0.69 | $6.99 |
| Hour of Devastation Promos | 40s | Rare | — | $5.49 |
7 rulings from Wizards of the Coast
- 14 July 2017Mana abilities can't be targeted. An activated mana ability is one that could add mana as it resolves, doesn't have a target, and isn't a loyalty ability. A triggered mana ability is one that could add mana as it resolves and triggers on an activated mana ability.
- 14 July 2017Triggered abilities use the word "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." Some keyword abilities, such as prowess and afflict, are triggered abilities and will have "when," "whenever," or "at" in their reminder text.
- 14 July 2017If you counter a delayed triggered ability that triggers at the beginning of the "next" occurrence of a specified step or phase, that ability won't trigger again the following time that phase or step occurs.
- 14 July 2017Abilities that create replacement effects, such as a permanent entering the battlefield tapped or with counters on it, can't be targeted. Abilities that apply "as [this creature] enters the battlefield" are also replacement effects and can't be targeted.
- 14 July 2017Activated abilities are written in the form "Cost: Effect." Some keyword abilities, such as equip and eternalize, are activated abilities and will have colons in their reminder texts.
- 8 December 2022When you cycle this card, first the cycling ability goes on the stack, then the triggered ability goes on the stack on top of it. The triggered ability will resolve before you draw a card from the cycling ability.
- 8 December 2022The cycling ability and the triggered ability are separate. If the triggered ability doesn't resolve (because, for example, it has been countered, or all of its targets have become illegal), the cycling ability will still resolve, and you'll draw a card.