Withering Wisps [Ice Age] Tribal Artifact Set: X Record Card type:

Set: X Record Card type: Option Rarity: Common Play Cost: 6 [Main] Choose any number of your opponent's Digimon whose total DP adds up to 10000 or less and delete them

then sacrifice it unless you pay its upkeep cost for each age counter on it

With a commando around

A tunnel carved by the Cosmos Serpent

Set: Innistrad: Double Feature Type: Legendary Creature — Human Wizard Rarity: Mythic Cost: {3}{U}{U} Spells can't be countered

Withering Wisps [Ice Age] Tribal Artifact Set: X Record Card type:Set: Ice Age Type: Enchantment Rarity: Uncommon Cost: {1}{B}{B} At the beginning of the end step, if no creatures are on the battlefield, sacrifice Withering Wisps. {B}: Withering Wisps deals 1 damage to each creature and each player. Activate this ability no more times each turn than the number of snow Swamps you control.