Card

Storm-Kiln Artist

Mana cost {3}{R}

This creature gets +1/+0 for each artifact you control. Magecraft — Whenever you cast or copy an instant or sorcery spell, create a Treasure token.

Part of 343 known combos, 4 of them two-card. 4 official rulings.

Bracket

B1 Exhibition — Not in the same deck as its two-card combo partners: Haze of Rage, Fury Storm, Chain of Smog, Chain of Acid
B2 Core — Not in the same deck as its two-card combo partners: Haze of Rage, Fury Storm, Chain of Smog, Chain of Acid
B3 Upgraded — Not in the same deck as its early two-card combo partners: Haze of Rage, Fury Storm, Chain of Smog, Chain of Acid
B4 Optimized — allowed: No restriction beyond the banned list
B5 cEDH — allowed: No restriction beyond the banned list

Two-card combo with Haze of Rage, Fury Storm, Chain of Smog, Chain of Acid (early with Haze of Rage, Fury Storm, Chain of Smog, Chain of Acid)

Bracket: Lotus Vault analysis, with Commander Spellbook flags

343 known combos, 4 of them two-card.

Storm-Kiln Artist + Seething Song + Reiterate
Produces: Infinite artifact ETB, Infinite artifact LTB, Infinite artifact sacrifice triggers
View on Commander Spellbook
Storm-Kiln Artist + Haze of Rage
Produces: Infinite artifact ETB, Infinite artifact LTB, Infinite artifact sacrifice triggers
View on Commander Spellbook
Storm-Kiln Artist + Thousand-Year Storm + Narset's Reversal
Produces: Infinite artifact ETB, Infinite artifact LTB, Infinite artifact sacrifice triggers
View on Commander Spellbook

2021-04-16 · Wizards of the Coast
If an effect creates a copy of an instant or sorcery spell, this will also cause the magecraft ability to trigger.
2021-04-16 · Wizards of the Coast
Some effects instruct you to copy an instant or sorcery card in a zone other than the stack. These copies do not cause magecraft abilities to trigger. However, most effects that do this also allow you to cast the copy, and casting the copy will cause magecraft abilities to trigger.
2021-04-16 · Wizards of the Coast
If an effect creates multiple copies of an instant or sorcery spell, magecraft abilities trigger once for each copy created by the effect.
2021-04-16 · Wizards of the Coast
Each magecraft ability has a different effect, although they all have the same trigger condition, whenever you cast or copy an instant or sorcery spell.

Rulings: Scryfall · Wizards of the Coast