血統の観察者 
Brood Monitor
クリーチャー — エルドラージ・ドローン3/3
Printed (JA)
クリーチャー — エルドラージ・ドローン
欠色（このカードは無色である。）血統の観察者が戦場に出たとき、無色の１/１のエルドラージ・末裔・クリーチャー・トークンを３体戦場に出す。それらは「このクリーチャーを生け贄に捧げる：あなたのマナ・プールに
を加える。」を持つ。
Oracle text (EN)
Creature — Eldrazi Drone
Devoid (This card has no color.)
When this creature enters, create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this token: Add 
."
Printing details
- Set
- BFZ · 164
- Rarity
- Uncommon
- Language
- JA
- Artist
- Izzy
- Released
- 2015-10-02
- Prices
- – · –
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (JA)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (JA) |
|---|---|---|
| November 2, 2026 | €0.16 | €0.24 |
| October 31, 2026 | €0.18 | €0.24 |
| October 30, 2026 | €0.19 | €0.24 |
| October 29, 2026 | €0.18 | €0.24 |
| October 28, 2026 | €0.19 | €0.24 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low – trend €0.16 30-day avg €0.14 | low – trend €1.31 30-day avg €1.25 |
| CardTrader (JA) | NM from €0.24 with Zero from €0.24 | NM from – |
| CardTrader (any language) | NM from €0.11 | NM from €0.60 |
Cardmarket updated Nov 2, 2026 · CardTrader updated Nov 2, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Legal
- competitivebrawl Legal
- duel Legal
- future Not legal
- gladiator Legal
- historic Legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Legal
- tlr Not legal
Rulings
-
Eldrazi and Scion are each separate creature types. Anything that affects Eldrazi will affect these tokens, for example.
-
Eldrazi Scions are similar to Eldrazi Spawn, seen in the Zendikar block. Note that Eldrazi Scions are 1/1, not 0/1.
-
Other cards and abilities can give a card with devoid color. If that happens, it's just the new color, not that color and colorless.
-
Cards with devoid use frames that are variations of the transparent frame traditionally used for Eldrazi. The top part of the card features some color over a background based on the texture of the hedrons that once imprisoned the Eldrazi. This coloration is intended to aid deckbuilding and game play.
-
Sacrificing an Eldrazi Scion creature token to add
is a mana ability. It doesn't use the stack and can't be responded to. -
If a card loses devoid, it will still be colorless. This is because effects that change an object's color (like the one created by devoid) are considered before the object loses devoid.
-
Devoid works in all zones, not just on the battlefield.
-
A card with devoid is just colorless. It's not colorless and the colors of mana in its mana cost.
-
Some instants and sorceries that create Eldrazi Scions require targets. If all targets for such a spell have become illegal by the time that spell tries to resolve, the spell won't resolve and none of its effects will happen. You won't get any Eldrazi Scions.