The foil version of Yarok is priced at around $33
For example, Annihilate will be card advantage if it resolves normally targeting a creature an opponent controlsyou lose one card from your hand but you also draw a card, for a net gain of zero cards, and your opponent loses one card, so you're up one card relative to them
Quintorius Kand, for example, can score free discover 4s, Tezzeret the Seeker can be used to tutor for various artifacts, and The Eternal Wanderer can wipe the board and rebuild it at the same time
This is an easy and effective shuffling method that works well with sleeved cards
One card in particular that I think could use another look is Patron of the Moon: (EDHREC Rank: #620) While the card is expensive, its Moonfolk offering ability allows you to discount the mana cost by sacrificing a Moonfolk, and you can cast it an instant speed
Combat phase Just like combat on your turn, you can attack your opponents with your creatures