This is often called virtual card advantage, since it doesnt actually draw a card, but prevents you from wasting a draw step on a card thats otherwise useless
Emrakul, the Aeons Torn, Kozilek, Butcher of Truth, and Ulamog, the Infinite Gyre are all still expensive despite two of those only really seeing play in Commander
What Time Wipe does is prevents any sort of card disadvantage when you play your own creature out in order to encourage the opponent to further play into your board wipe
Trainers and energy acceleration kept things competitive
"We wanted to fuse Two-Headed Giant flavor with a world to give players something extra to latch onto," said Verhey
Lillies Clefairy ex SIR Heres your creepy underage waifu card for the set