There are some SAR cards out there that can sell for an immensely high price, as the intricate designs make them chase cards for collectors
Ramos, Dragon Engine
The casting cost for the burn effect seems a bit off, but this is probably the lowest that we can realistically get because it's going to become too busted at two mana
Affordable, beautiful, fun, the bundle allows you to play in a balanced group setting (sorry, Steve, your turn-2, 20-minute-turn, win-con deck isnt fun to play against) Buy it
Trial of a Time Lord cant tag opposing tokens or be used to blink your own creatures, but in an aggressive mirror, this is still a potentially massive breaker
With a constant threat of burn spells red is a good choice for players who enjoy bluffing but want to take a more proactive approach