This cost is reduced by if you tap an artifact or creature, which includes noncreatures
Triggered abilities use the words "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]." Some keyword abilities (such as prowess) are triggered abilities and will have "when," "whenever," or "at the beginning of" in their reminder text
Its probably never going to reach those heights ever again, especially after this reprint
Windfall makes everyone discard their hand and then draw cards equal to the greatest number of cards discarded, making it perfect for multiplayer formats like Commander
Legendary Planeswalker - Ugin Ramp (CTRL to add secondary) Removal Ugin, the Spirit Dragon +2: Ugin deals 3 damage to any target
But back to Kobolds