Card advantage is generally preferable to ramp effects
Of course, you will need a strong base of Giant creatures to stay on board for this effect to work, which shouldn't be too hard in the Kaldheim meta, where Giants are favored not only in quantity, but also in quality
Culling the Weak Weve looked at a few cards that sacrifice creatures to generate mana, but Culling the Weak does it the best because it turns a creature of any size into 4 mana
From memory Shadowspear was around five USD the first few weeks after THB released Because of its relevance in the Theros story arc, I think were mainly going to see it getting reprinted in supplemental sets or universes beyond sets because reprinting it in Amonkhet or Lorwyn would make little sense
Charge of the Forever-Beast deals damage to target creature or planeswalker equal to the revealed cards power
(It's an artifact with ", Sacrifice this token: Add one mana of any color.") Amass Orcs 2