Caryll, Great Ones Runesmith

Aura spells you control and Aura cards you own
that aren’t on the battlefield are Runes in addition
to their other types and gain "Enchant Equipment"
and "As long as enchanted permanent is an
Equipment, it has this Aura's other non-Enchant
abilities." (Equipment abilities which reference
"enchanted creature" still work for the creature the
equipment is attached to.)

Whenever you enchant an Equipment, draw a card.
This ability triggers only once each turn.