I'd say this one is possible, but an uphill battle
Loxodon Warhammer (SLD foil $10) Adding three power is the magic number for both of them, and while a classic, you especially want trample on Tifa
This category of cards is one of the defining features of powerful formats like Commander, Legacy and Vintage, adding consistency and versatility to your deck, which is especially useful in singleton formats
Cosmogrand Zenith We know casting two spells in a turn is quite achievable, though three mana makes it meaningfully harder
Battle for Zendikar Standard is 27% more expensive than Gatecrash Standard
Cursecatcher 1.2 (B cube) Power 1.0 Support 1.4 This guy doesn't affect the board very much and acts more as a Rishidan Port preventing them from tapping out to cast important spells