After seeing it in action im Modern, I'm surprised that the The Ozolith isn't explored more. That card can do some stupid shit with Hardened Scales/Ravager in Legacy, e.g.

T1: Land, Hardened Scales
T2: Land, Ballista @1 --> 2 counters
T3: Land, Ozolith, Ravager --> 2 counters, sac some random cmc 0 artifact (can be artifact lands), --> 4 counters, sac Ravager to itself --> counters go on Ozolith (5 counters), then 5 counters go onto Ballista (7 counters by now), then go into combat, put counters onto Ballista (13 counters now), swing for 13, shoot the rest for lethal.

And you could even combine it with a Lurrus shell, e.g. here.