If were looking at 600 dpi, 2.5*600=1500 and 3.5*600=2100, so 15002100 is the size of the card in pixels
However, for your combat damage to get through, you will need some protection from your opponents after they have either saved up the mana to blow away some of your Humans or kept some of their poor creatures untapped to block you (even if your creatures can't die because of Goldbug, Humanity's Ally )
With Seasons Past, the branches push right out of the canopy
BPhillipYork: Yeah, awesome, another enabler for big fat Eldrazi
That covers creatures, of course, but also Food, Treasures, Clues, and all the other artifact tokens that have made themselves at home in recent Magic