Cheapest priced copy (New Capenna Commander): $0.49 at Card Kingdom, near mint, their price list as of .
In Too Deep 
Enchantment — Aura · Rare · New Capenna Commander · #27
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Enchant creature, planeswalker, or Clue
Enchanted permanent is a colorless Clue artifact with "{2}, Sacrifice this artifact: Draw a card" and loses all other abilities. (It's no longer a creature or planeswalker.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Capenna Commander | 27 | Rare | $0.49 | — |
| New Capenna Commander | 128 | Rare | $0.99 | — |
| New Capenna Commander Promos | 27p | Rare | — | $11.99 |
7 rulings from Wizards of the Coast
- 29 April 2022Players may turn face-down creatures face up while a spell with split second is on the stack.
- 29 April 2022If 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.
- 29 April 2022Split second doesn't allow players to cast the spell it's on at times when they otherwise wouldn't be able to cast it. An enchantment with split second may still be cast only during its controller's main phase when the stack is empty.
- 29 April 2022Split 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.
- 29 April 2022After 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.
- 29 April 2022Players still get priority while a card with split second is on the stack; their options are just limited to mana abilities and certain special actions.
- 29 April 2022Casting a spell with split second won't affect spells and abilities that are already on the stack.