Magic 's approach to such things has clear precedents
#10 Sterling Grove Last, but not least, we have Sterling Grove
First, it can just overrun opponents with sheer numbers , or use cards like End-Raze Forerunners or Insatiable Frugivore to either trample or bypass defenses
Some of these are objectively powerful, like Muldrotha, the Gravetide or Yarok, the Desecrated, while others need some specific combos to work, or good elemental creatures
Growing Threat - Precon Primer Brimaz, Blight of OreskosBrimaz, Blight of Oreskos | Art by Uriah Voth Where the Elite Meet to Compleat What up
By paying two generic mana and tapping Zevlor before casting Shock, you're now allowed to copy Shock twice (once for each other opponent) and target a creature each of those opponents controls as well