If Machine God's Effigy copies a land with a basic land type that has become a creature due to an effect, it will not have any mana abilities that land had due to its land types (it will have the one it gives itself, though)
And how do you explore it
Damnation does that efficiently and on curve, which matters in formats where turn-four wipes stabilize games
The little badgermole that could generates 3/3 of stats and ramps you, which will probably be good enough for Standard play, but it also doubles all mana-making creatures, allowing for some fast and furious ramping
While higher-cost cards can have better rewards and benefits, they take a lot to summon and could leave players open to attack
The One-Winged Angel stares you down over a stark vermilion backdropMajis Sephiroth rendered with razor-clean inks, flowing silver hair, and that impossibly long blade poised behind him