One example of a good buying opportunity is the deep discounts on booster boxes that periodically show up on Amazon
Jitter is the sudden deviation that you get in your ping whenever you are playing online games
Its cheaper, comes with prowess, and its ability spells out a replacement effect that turns your noncombat damage into -1/-1s instead of the wither keyword
Experiment Kraj Felix Five-Boots Ice Flan Mimeoplasm, Revered One Prime Speaker Vannifar Slick Imitator Slogurk, the Overslime The Mimeoplasm Vannifar, Evolved Enigma
In general, you should aim to play four copies of a card if: It's a vital part of your game plan You want to be able to consistently draw it It gets better in multiples If you've built your deck correctly, this should be the case for most cards you're running
This is where Teferi, Hero of Dominaria, earns his reputation by turning time itself into a resource