Sonic Burst 
Instant
$0.15 #29943 0.00 28.3 years
As an additional cost to cast this spell, discard a card at random.
Sonic Burst deals 4 damage to any target.
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Cards similar to Sonic Burst expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Acceptable Losses98%
$0.09↓#292820.0025.1 years↓
"As an additional cost to cast this spell, discard a card at random."
+1 more matching line
Sonic Seizure96%
$0.12↓#295170.0024.7 years↓
"As an additional cost to cast this spell, discard a card at random."
+1 more matching line
Flame Lash92%
$0.14↓#19028↑0.33↑10.1 years↓
"this card deals 4 damage to any target."
Cleansing Screech92%
$0.15#308790.008.3 years↓
"this card deals 4 damage to any target."
Unfriendly Fire92%
$0.05↓#284320.009.1 years↓
"this card deals 4 damage to any target."
Lightning Blast92%
$0.16↑#22153↑0.0029.0 years
"this card deals 4 damage to any target."
Searing Spear92%
$0.12↓#16978↑0.0014.3 years↓
"this card deals 3 damage to any target."
Volcanic Hammer92%
$0.12↓#22098↑0.0029.5 years↑
"this card deals 3 damage to any target."
Precision Bolt92%
$0.18↑#275200.008.0 years↓
"this card deals 3 damage to any target."
Fire Ambush92%
$4.45↑#300640.0627.5 years
"this card deals 3 damage to any target."
Lightning Strike92%
$0.08↓#2263↑0.0913.1 years↓
"this card deals 3 damage to any target."
Open Fire92%
$0.04↓#23767↑0.009.3 years↓
"this card deals 3 damage to any target."
Explosive Impact92%
$0.09↓#260800.12↑14.0 years↓
"this card deals 5 damage to any target."
Shock92%
$0.05↓#2222↑0.0728.6 years
"this card deals 2 damage to any target."
Cinder Storm92%
$0.13↓#23609↑0.0027.3 years↓
"this card deals 7 damage to any target."
Scorching Spear92%
$0.10↓#301270.0029.5 years↑
"this card deals 1 damage to any target."
Searing Wind92%
$0.63↑#16021↑0.27↑26.4 years↓
"this card deals 10 damage to any target."
Volcanic Geyser92%
$0.12↓#12927↑0.18↑30.0 years↑
"this card deals X damage to any target."
Blaze92%
$0.12↓#11372↑0.10↑29.5 years↑
"this card deals X damage to any target."
Zuko's Offense90%
$0.16↑#19966↑0.090.9 years↓
"this card deals 2 damage to any target."