護球守衛 
Watcher of the Spheres
生物 ～鳥／魔法師2/2
Printed (ZHT)
生物 ～鳥／魔法師
飛行
你施放之具飛行異能的生物咒語減少
來施放。
每當另一個具飛行異能的生物在你的操控下進戰場時，護球守衛得+1/+1直到回合結束。
Oracle text (EN)
Creature — Bird Wizard
Flying
Creature spells with flying you cast cost less to cast.
Whenever another creature you control with flying enters, this creature gets +1/+1 until end of turn.
Printing details
- Set
- M21 · 227
- Rarity
- Uncommon
- Language
- ZHT
- Artist
- G-host Lee
- Released
- 2020-07-03
- Prices
- – · –
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend |
|---|---|
| November 2, 2026 | €0.62 |
| November 1, 2026 | €0.59 |
| October 30, 2026 | €0.55 |
| October 29, 2026 | €0.51 |
| October 28, 2026 | €0.52 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low – trend €0.62 30-day avg €0.52 | low – trend €1.12 30-day avg €1.14 |
| CardTrader (ZHT) | No offers | |
| CardTrader (any language) | NM from €0.14 | NM from €0.59 |
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 Legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Legal
- tlr Legal
Rulings
-
The cost reduction applies only to generic mana in the cost of creature spells with flying you cast. For example, if you cast a second Watcher of the Spheres, its cost won't be reduced below
. -
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Watcher of the Spheres). The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
-
A creature spell that doesn't have flying won't cost less even if an effect will cause the creature to have flying once on the battlefield. This is also true if the creature spell itself has an ability that gives it flying once on the battlefield under certain conditions, even if those conditions are true.