Your other creatures will usually act as a defensive wall and resource engine, tapping down immediately before your turn to draw free cards (or later on, to grow their stats)
I've seen people just decide not to cast their second Swords to Plowshares because they had one in the graveyard already
While Mill X cards like Wall of Lost Thoughts will churn through four cards for two mana, which isnt a terrible mana to mill ratio, without top deck knowledge theres no way of knowing what exactly youre putting in your graveyard
2 Shredder, Shadow Master Legendary Creature The iconic nemesis of the Teenage Mutant Ninja Turtles gets this great expansion card that is wonderfully crafted to send huge damage towards one player, then halves the receiving player's life, just to add insult to injury
Uniquely, the front side of this card is a Legendary Creature, which can be a commander