CAULDRON FAMILIAR

an MTG deckbuilding companion

Work out a tricky interaction, settle a rules question, or paste your decklist and talk through what to cut, add, or swap. Every card and ruling is checked against Scryfall as you go, so the answer holds up.

Well met — I'm Brew. Bring me a rules question or a decklist to pick apart, and I'll check every card before I say a word about it.

❧ GENERIC CHAT GUESSES. CAULDRON FAMILIAR CHECKS.

A generic assistant will confidently reference cards that don't exist. Brew looks every one up first — here's what that actually looks like mid-conversation.

RULES CHECK

You

Does Ward stop my own spells from targeting my permanent?

Confirming Ward's trigger condition only fires off an opponent's spells and abilities, not your own.

No — Ward only triggers off a spell or ability an opponent controls. Your own spells (or a teammate's, in some formats) can target that permanent freely; Ward does nothing there.

✓ward

DECKBUILDING

You

I've got Witch's Oven in my sacrifice deck — what's a cheap creature that loops well with it?

Checking which low-cost creatures return from the graveyard by sacrificing a Food, matching Witch's Oven's own token.

Cauldron Familiar is the classic pairing — it drains a life on every entry, and Witch's Oven's Food is exactly what brings it back from the graveyard. Sac it to the Oven, cash in the Food, repeat.

✓Cauldron Familiar

QUICK RULING

You

Can I still cast Toxic Deluge for X=0 if I'm sitting at 1 life?

Confirming Toxic Deluge's life-loss cost scales freely from 0 up, with no stated minimum.

Yes — Toxic Deluge's cost is any amount from 0 up to your life total, so X=0 is legal at 1 life. It just won't give -X/-X to anything that turn.

✓Toxic Deluge