Cheapest priced copy (New Capenna Commander): $0.99 at Card Kingdom, near mint, their price list as of .
Kros, Defense Contractor 
Legendary Creature — Cat Advisor · 2/4 · Mythic · New Capenna Commander · #7
At the beginning of your upkeep, put a shield counter on target creature an opponent controls.
Whenever you put one or more counters on a creature you don't control, tap that creature and goad it. It gains trample until your next turn. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.99 to $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Capenna Commander | 7 | Mythic | $0.99 | $0.99 |
| New Capenna Commander | 105 | Mythic | $2.29 | $1.49Out of stock |
6 rulings from Wizards of the Coast
- 29 April 2022“Shield” is not an ability that creatures have and shield counters are not keyword counters. If a creature with a shield counter loses its abilities, the shield counter will still protect it as normal.
- 29 April 2022Shield counters don't prevent players from sacrificing creatures.
- 29 April 2022If a permanent that would be dealt damage has more than one shield counter on it, that damage is prevented and only one shield counter is removed.
- 29 April 2022Removing a shield counter in this way isn't the same as regenerating a creature.
- 29 April 2022A creature with a shield counter on it may still be destroyed by state-based actions if it has damage marked on it equal to its toughness or has been dealt unpreventable damage by a source with deathtouch.
- 29 April 2022If a permanent with a shield counter is dealt unpreventable damage, that damage will be dealt and a shield counter will still be removed.