Cheapest priced copy (Modern Horizons 3): $0.35 at Card Kingdom, near mint, their price list as of .
Siege Smash 
Instant · Common · Modern Horizons 3 · #136
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Choose one —
• Destroy target artifact.
• Target creature gets +3/+2 and gains trample until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 3 | 136 | Common | $0.35 | $0.49 |
6 rulings from Wizards of the Coast
- 7 June 2024Casting a spell with split second won't affect spells and abilities that are already on the stack.
- 7 June 2024After 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.
- 7 June 2024Split 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.
- 7 June 2024Players 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.
- 7 June 2024Players may turn face-down creatures face up while a spell with split second is on the stack.
- 7 June 2024If 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.