It's arguably one of the best cards for Type Four from the set (Rules are - infinite mana but just one spell per turn so counters are good there since they cannot be overwhelmed by casting more spells than you have mana, and a five cost counter is first turn able there)
The types of cards present in Base Set are H (holo rare), R (rare), U (uncommon), C (common), E (Basic Energy) and O (other, here denoting Machamp which was not obtainable from booster packs)
We're on our fourth article focusing on mechanics that debuted in the original Lorwyn/Shadowmoor block
I could be way off, and I'm sure someone more cunning than me has made a deeper interpretation of the art
You do get to pick and choose which permanent cards youre playing, so if theres a spell or two you dont want to cast you dont have to, though it does go straight to the graveyard