Contraband Kingpin will scry as its controller puts artifacts onto the battlefield (such as Servos from creatures with Fabricate), and Aetherborn Marauder can even move +1/+1 counters from other creatures onto itself
Amethyst Dragon ( F, LC ) - A 5 mana 4/4 haste flier with a Pyrotechnics adventure stapled to it
Flickering Eternal Witness allows it to get back more and more from your graveyard
While the sheer volume of cards can seem overwhelming, Ive found it relatively easy to navigate so far
Cheating mana costs of big cards is something players are well used to in the format, often through cards like Jodah, Archmage EternalJodah, Archmage Eternal, casting an OmniscienceOmniscience for cheap
Depending on the number of permanents 2 CMC or lower, you could be looking at 10+ extra mana for the turn that you cast it