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Drill to Earth's Core item data: every drill upgrade with its Coin cost, rarity and per-level effect, plus the three-card combo that breaks boss walls fastest.

Drill Upgrades — Costs, Rarities and Which Cards to Buy

Every Drill to Earth's Core drill upgrade with its Coin cost, rarity and effect, plus the three-card combo that breaks boss walls fastest.

Last updated: 9/21/2026