Cheap extra combats are always worth a look, and a three mana option that untapped all of your creatures and not just the one like Seize the Day is one Im interested in
Shroofus Sproutsire -- This card can generate amusing numbers of Saprolings, though Tana, the Bloodsower offers more in this role
Check out the video to see how tough they are
Saruman of Many Colors yoinks enchantments out of opponents graveyards, which is easy to gloss over when reading the more common text about instants and sorceries
You get a one-time boon with "When you cast a creature spell, that creature enters the battlefield with an additional +1/+1 counter, trample counter, and vigilance counter on it." A one-time boon is a single-use triggered ability with no source
I can recommend it or flavor and the lulz, but I cant seriously recommend it