Depth Charge Colossus
Artifact Creature — Dreadnought
Prototype 
— 6/6 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
This creature doesn't untap during your untap step.
: Untap this creature.
- CMC
- 9
- Mana cost
- Color identity
- U
- Rarity
- common
- Set
- The Brothers' War
- Price
- $0.12
- EDHREC rank
- #21022
Depth Charge Colossus enters as an 8/8 with ward 2 for six mana — a reasonable body — but its real function is as a reset button that untaps all artifacts when it enters or attacks, enabling infinite loops with Staff of Domination and similar engines. If you're not building around that trigger, you're paying six mana for a vanilla threat.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
Depth Charge Colossus is legal in Commander, Legacy, Modern, Pioneer, Pauper, Vintage, and Oathbreaker, but it's almost exclusively a Commander card in practice. The untap-all-artifacts trigger is too slow and conditional for competitive Constructed formats where six mana needs to end the game immediately. In Commander, it slots into artifact combo shells as a redundant untap effect — a role where the ward 2 actually buys it enough protection to matter.
Key Combos
Combo lines featuring this card
Staff of DominationClock of OmensDepth Charge ColossusChromatic Orrery
Infinite card draw; Infinite colored mana; Infinite colorless mana; Infinite draw triggers; Infinite lifegain; Infinite lifegain triggers; Infinite untap of artifacts you control; Infinite untap of creatures you control
View on Commander Spellbook ↗Price Context
Current price
$0.12 bulk tier
At $0.12, Depth Charge Colossus is deep bulk — no barrier to picking up copies for any artifact combo deck that wants the effect. Bulk rares with narrow combo applications rarely climb without a breakout deck pushing demand, so expect it to stay in this range.
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Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.