Reflection is very interesting
This means that sets feel more reasonable overall, and hopefully that the power creep in the game can slow down a bit, which should also lead to older cards remaining playable for a longer time
Dust off the obscure Mishras Groundbreaker to do the same with a land
Backdraft HellkiteBackdraft Hellkite is a more fragile version of Past in FlamesPast in Flames, but the turn it attacks (which will presumably be the turn after you cast it) it will allow you to use all of the mana at your disposal
A variety of cards, including Olivia, Opulent Outlaw , Misfortune Teller , and Life Insurance will generate a fair pile of Treasure tokens, while others like Captain Lannery Storm and Vihaan, Goldwaker give you something to do with them aside from generate mana