That way you can gas up their decks, let them see what its like to pull off explosive plays later in the game, and theyll likely have a lot more fun than if they are totally mana screwed in their first game
Ancient Adamantoise Any use you get out of Ancient Adamantoise makes it great, because the rebate of 10 treasures is massive and often means you can cast a larger and stronger spell after this
In many cases, this adds value to the cards as they will never be seen in a new set again
This method does require quite a bit of card research as well as time to test out new ideas
6/6 is huge and hitting an opponent one time makes him twice as good, because you'll probably have one or two cards in your yard
It might not be as good as Prosper, Tome-Bound, but Vihaan is an intriguing alternative as a treasure commander