Delirium is making a comeback, and there are plenty of cards that pay you off for having four or more card types in your graveyard
Luke and Gavin both believed that Yuga wouldn't be able to make a comeback against "Blue-Eyes" with a single card, but Yuga revealed that in a Rush Duel, players drew until they had five cards at the beginning of their turns, and he Summoned his ace monster, "Sevens Road Magician", increasing its ATK high enough to destroy "Blue-Eyes" and defeat the Hologram Man with one attack
For example, if I chose Ashnod as my vanguard, Id draw a starting hand of eight cards, down to seven on my first mulligan
You can also try to create synergies within your own deck, whether it be with Deaths Shadow as mentioned above, or my personal favourite in Legacy of casting it at your opponents end step and then cast an Uro, Titan of Natures Wrath a three-mana 6/6 creature
Drake Hatcher can easily be pumped with cards like Monstrous Rage and produce a drake token right away
If they dont, theres a risk the card will become a permanent target of speculation