Wave of Terror 

Enchantment
$0.89 #29577 0.47 29.2 years
Cumulative upkeep
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of your draw step, destroy each creature with mana value equal to the number of age counters on this enchantment. They can't be regenerated.
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Cards similar to Wave of Terror 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.
Consume the Meek90%
$0.19↓#19683↑0.10↓16.4 years↓
"Destroy each creature with mana value 3 or less. They can't be regenerated."
Mageta the Lion85%
$2.65↑#21219↑0.4426.3 years↓
"

,
, Discard two cards: Destroy all creatures except for Mageta. Those creatures can't be regenerated."
Planar Collapse81%
$0.43↓#17843↑0.4727.6 years↓
"At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated."
Serenity80%
$0.31↓#22137↑0.5729.2 years
"At the beginning of your upkeep, destroy all artifacts and enchantments. They can't be regenerated."
Plague Wind80%
$2.50↑#6513↑0.4626.3 years↓
"Destroy all creatures you don't control. They can't be regenerated."