Minotaurs often work well with discard effects, so pair them with cards like Bone Miser, Waste Not, Anger, and Monument to Endurance
Zimone's excellent demonstration last week showed how modifying the mana flow allows us additional opportunities to modify the later spell rate
Not only can you get a big discount on your sorcery spells during your combat step, but you can also keep mana open to cast powerful sorcery spells on your opponents turns, allowing you to cast counterspells or other interaction if necessary
Alternatively, Agatha's Soul Cauldron could exile Voldaren Thrillseeker, granting its sacrifice ability to your creatures with a +1/+1 counter
Jalira, Master Polymorphist's only weakness is it can't hit legendary creatures, but with the right build, this downside is easily played around