the most common
For example, if you control Opalescence, which says, in part, "Each other non-Aura enchantment is a creature," each enchantment will be a creature at the time it enters the battlefield and will not cause triggered abilities to trigger
Vessel of the All-Consuming's first triggered ability will trigger whenever it deals any damage, not just combat damage
Official 3rd Anniversary commemorative product
(If a creature has multiple instances of melee, each triggers separately.) Legendary Creature - Human Knight Anim Pakal, Thousandth Moon Whenever you attack with one or more non-Gnome creatures, put a +1/+1 counter on Anim Pakal, then create X 1/1 colorless Gnome artifact creature tokens that are tapped and attacking, where X is the number of +1/+1 counters on Anim Pakal
There's also a cute Scooby Doo reference (MTG Universes Beyond set incoming?) and a magnifying glass treatment that's used for story spotlight cards