Usually, its while Im shopping for a well-priced Old School card for a deck
Tevesh Szat, Doom of Fools [Best Sacrifice Value Engine] Tevesh Szat, Doom of Fools establishes control by turning expendable resources into cards
Here are another ten cards that I thought are pretty good, but didn't make my list
It usually ETBs tapped, taps for Whitw and you can tap it with two mana to draw a card but only if you attacked with two or more dorks this turn, which is pretty likely in a creature based aggro color like White
With cards like Drover of the Mighty, Channeler Initiate, Pillar of Origins, Unclaimed Territory, and Attune to Aether in Standard, it's not hard to get the mana you need to play the best Dinosaurs from each color
Some even have a large swath of canon cards from sets that hint at worlds to come that remain unnamed, such as those from Atherdrift