坚韧符文 (Rune of Sustenance) (zhs)
Enchantment - Aura Rune
(CMC 2)
Enchant permanent
When Rune of Sustenance enters the battlefield, draw a card.
As long as enchanted permanent is a creature, it has lifelink.
As long as enchanted permanent is an Equipment, it has "Equipped creature has lifelink."