What it does
Magecraft triggers whenever you cast or copy an instant or sorcery spell. Each Magecraft ability lists what happens—typically a small bonus like "deal 1 damage" or "draw a card." The key word is cast or copy: you don't need the spell to resolve, and copying a spell (even via abilities that put copies on the stack without casting) also triggers it.
The common mistake is thinking only the spell's controller matters or that activated/triggered abilities count—they don't. Magecraft only cares about instants and sorceries, not abilities that mimic them. Also, each separate spell or copy triggers it individually, so copy effects can stack value fast.
In Commander, Magecraft rewards spellslinger decks heavy on cheap cantrips and copy effects. Cards like Storm-Kiln Artist or Archmage Emeritus snowball quickly, turning a single turn of casting into huge mana, cards, or damage.













