2 cards where the name includes “armageddon”

Armageddon (Masters 25 #5)

Armageddon {3}{W}

Sorcery

Destroy all lands.

Watermark: Set Symbol

Illustrated by Chris Rahn

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Armageddon Clock (Masters Edition IV #180)

Armageddon Clock {6}

Artifact

At the beginning of your upkeep, put a doom counter on Armageddon Clock.

At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player.

{4}: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.

Illustrated by Amy Weber

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny

The message was clear to Sorin—time to search for something else.