MTGNexus

If I have Ojer Axonil, Deepest Might in play and I cast Shower of Sparks, will the Shower of Sparks deal 4 damage to the creature instead? Or does it still just deal 1 damage to creature and 4 to player?

Same with Pyrohemia, if I activate for r will it deal 4 damage to each creature and each player?

Shower of Sparks will deal 1 damage to the creature and 4 damage to the opponent, and Pyrohemia will deal 1 damage to you (and your teammates) and each creature and 4 damage to each of your opponents. Although this is damage by a single source, Axonil only looks at damage that is dealt to opponents, not to anything else by the same source.