Obelisk Spider
Obelisk Spider: Creature - Spider, Hour of Devastation. Reach. MTG card printings, market prices, rulings, and format legality on Mana Grove.
- Mana cost
- {1}{B}{G}
- Mana value
- 3
- Type
- Creature - Spider
- Colour identity
- Black and green (BG)
- Power / toughness
- 1/4
- Rarity
- Uncommon
- Set
- Hour of Devastation (HOU)
- Released
- 2017-07-14
- Collector number
- 141
- Artist
- YW Tang
- Commander rank
- 4,872 (by how often it appears in Commander decks)
- Keywords
- Reach
Build around this card with Grover
About Obelisk Spider
Obelisk Spider is a Magic: The Gathering card, an uncommon black and green creature from Hour of Devastation (HOU), an expansion set released in July 2017. It is collector number 141 in that set, with art by YW Tang. It costs {1}{B}{G} (one generic, one black and one green mana) to cast, for a mana value of 3. It is a 1/4 creature. Its colour identity is black and green. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless and Gladiator. It has been printed in 3 sets, from Hour of Devastation (2017) to The List (2020). The latest aggregated market price for this printing is $2.91 (normal finish, as of 2026-11-02).
Card text
Reach
Whenever this creature deals combat damage to a creature, put a -1/-1 counter on that creature.
Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.
Market price
Latest aggregated market price for the normal finish of this printing: $2.91 (as of 2026-11-02).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Obelisk Spider by format. Formats in which it is not legal are not listed.
| Pioneer | Legal |
|---|---|
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Commander | Legal |
| Duel Commander | Legal |
| Oathbreaker | Legal |
| Brawl | Legal |
| Historic | Legal |
| Timeless | Legal |
| Gladiator | Legal |
Other printings of Obelisk Spider
Obelisk Spider has been printed in 3 sets. The other printings are listed newest first, with the rarity and release year of each.
| Printing | Rarity | Year |
|---|---|---|
| Amonkhet Remastered (AKR) #249 | Uncommon | 2020 |
| The List (PLST) #HOU-141 | Uncommon | 2019 |
Official rulings
Seven official rulings apply to Obelisk Spider, newest first.
- If Obelisk Spider deals combat damage to a creature at the same time Obelisk Spider is dealt lethal damage, its first triggered ability will put a -1/-1 counter on the other creature. However, because Obelisk Spider has left the battlefield before that ability resolves, its last ability won’t trigger.
- If you put one or more -1/-1 counter on each of multiple creatures at the same time, Obelisk Spider’s last ability triggers once for each of those creatures.
- In a Two-Headed Giant game, Obelisk Spider’s last ability causes the opposing team to lose 2 life and you gain 1 life.
- If Obelisk Spider deals combat damage to a creature but that creature isn’t on the battlefield as Obelisk Spider’s first triggered ability resolves, most likely because Obelisk Spider killed that creature already, that ability won’t put a -1/-1 counter on it.
- Because damage remains marked on a creature until it’s removed as the turn ends, the counter Obelisk Spider’s first triggered ability puts on a creature may cause previously marked damage to become lethal.
- Obelisk Spider’s first triggered ability puts only one -1/-1 counter on the creature, no matter how much combat damage it dealt.
- If a creature with wither or infect deals damage to a creature, the controller of the creature with wither or infect puts that many -1/-1 counters on the second creature.
Similar cards
Other creature cards with a black and green colour identity, ranked by how often they appear in Commander decks.