The main reason the hand-smoothing doesnt change up the format is because of land variety
You can also target an opponent, although its probably only a good idea when you really need to do 2 damage to him/her and the extra card draws dont matter, e.g
Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.) Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.) Legendary Creature - Human Warrior Woe Strider When this creature enters, create a 0/1 white Goat creature token
Tap Krenko, make eight Goblins, lose 16 life please
Thats amazing value on a 2-drop Instant
Dramatic Snipe You need four cards to make this combo work