Card
Rex, Cyber-Hound
Mana cost {1}{W}{U}
Legendary Artifact Creature — Robot Dog 2/2
Whenever Rex deals combat damage to a player, they mill two cards and you get {E}{E} (two energy counters). Pay {E}{E}: Choose target creature card in a graveyard. Exile it with a brain counter on it. Activate only as a sorcery. Rex has all activated abilities of all cards in exile with brain counters on them.
No bracket restriction: playable from bracket 1. Part of 73 known combos. 2 official rulings.
- Commander
- Legal
- Printing
- Rare · PIP · #117
- Cheapest printing
- €0.23
- EDHREC salt
- —
- Color identity
- Blue, White
- Keywords
- Mill
Bracket
- B1 Exhibition — allowed: No restriction at this bracket
- B2 Core — allowed: No restriction at this bracket
- B3 Upgraded — allowed: No restriction at this bracket
- B4 Optimized — allowed: No restriction beyond the banned list
- B5 cEDH — allowed: No restriction beyond the banned list
Why
- No Game Changer, mass land denial, extra turn, tutor or two-card combo
How Lotus Vault estimates a bracket
Bracket: Lotus Vault analysis, with Commander Spellbook flags
Combos
73 known combos.
- Rex, Cyber-Hound + Pili-Pala + Palladium Myr
Produces: Infinite colored mana, Infinite colorless mana
View on Commander Spellbook - Rex, Cyber-Hound + Omen Hawker + Horseshoe Crab
Produces: Infinite colorless mana that can only be spent to activate abilities
View on Commander Spellbook - Rex, Cyber-Hound + Omen Hawker + Morphling
Produces: Infinite colorless mana that can only be spent to activate abilities
View on Commander Spellbook
Combos: Commander Spellbook
Rulings
- 2024-03-08 · Wizards of the Coast
If an activated ability of a card in exile with a brain counter on it references the card it's printed on by name, treat Rex's version of that ability as though it referenced Rex, Cyber-Hound instead. For example, say Arcade Gannon (which has the ability "{T}: Draw a card, then discard a card. Put a quest counter on Arcade Gannon.") is in exile with a brain counter on it. You would treat Rex's version of the ability as though it said "{T}: Draw a card, then discard a card. Put a quest counter on Rex, Cyber-Hound." - 2024-03-08 · Wizards of the Coast
Rex gains only activated abilities. It doesn't gain triggered abilities or static abilities. Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and may have colons in their reminder text.
Rulings: Scryfall · Wizards of the Coast