Cheapest priced copy (Tales of Middle-earth Commander): $79.99 at Card Kingdom, near mint, their price list as of .
Legolas's Quick Reflexes 
Instant · Rare · Tales of Middle-earth Commander · #493
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Untap target creature. Until end of turn, it gains reach, hexproof, and "Whenever this creature becomes tapped, it deals damage equal to its power to up to one target creature."
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $64.99 to $119.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tales of Middle-earth Commander | 493 | Rare | $79.99 | $64.99 |
| Tales of Middle-earth Commander | 537 | Rare | — | $119.99 |
6 rulings from Wizards of the Coast
- 3 November 2023Players may turn face-down creatures face up while a spell with split second is on the stack.
- 3 November 2023After a spell with split second resolves (or otherwise leaves the stack), players may again cast spells and activate abilities before the next object on the stack resolves.
- 3 November 2023Casting a spell with split second won't affect spells and abilities that are already on the stack.
- 3 November 2023If the resolution of a triggered ability involves casting a spell, that spell can't be cast if a spell with split second is on the stack.
- 3 November 2023Players still get priority while a spell with split second is on the stack; their options are just limited to mana abilities and certain special actions.
- 3 November 2023Split second doesn't stop triggered abilities from triggering, such as that of Chalice of the Void. If one does, its controller puts it on the stack and chooses targets for it, if any. Those abilities will resolve as normal.