2019-01-25 Any effects that modify Amplifires power and/or toughness without setting them to a specific number or value will apply after its base power and toughness are set, regardless of the order in which those effects were created
P/T Number 111 Language English Legal Formats Commander, Legacy, Modern, Pauper, Pioneer, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Standard, Timeless Rulings (1/22/2016) For some cards, surge represents only an alternative cost, a discount that applies if you or a teammate has cast another spell this turn
Dual Wielding his Long Colts: it looks cool and if you have both in hand, you can play the other at the same time without paying the cost, but the benefits of doing so are limited, as Tony's guns are a pretty crappy weapon unless you waste all your bounties at once (which, as explained above, is not a good play) and you cannot even shoot them both at the same time either, negating the main advantage of wielding both together
Lastly, there's one honorable mention I wanted to highlight for its value, despite not fitting into one of my previous categories
A "Near Mint" card purchased on the secondary market for 200 may return a PSA 7 or 8, worth considerably less than expected