Just a thought sorcery and gods

So I’ve been reading about people wanting sorcery and this hit me. If we take an aspect from advance dnd you worship one of the gods and depending on tier lvl of alter you get some spell use. To make this not so over powered you also limit the amount of said spell s to a per day. Stronger spell less uses. Now with chrom I think his set should be self buff. I’m a primary yimir so don’t think I’m trying to make chrom all poweerfull. So back to chrom I think for his big 1 spell use should be the ability to rip through buildings with your own weapon. At the cost of loosing all your stam per swing up to 30 swings of you weapon. Any thought on this system and spell suggestions