Kynaios and Tiro of Meletis Im not going to pretend that Kynaios and Tiro of Meletis is a more powerful card than King Kenny, but K&T is group hug at its most quintessential
So long as the revealed card has a mana value less than the spell you cast, you can cast it for free
Or you could use cards like Merfolk Looter and pitch big, splashy spells into the graveyard you can flash back for cheap, like Ezuris Predation, Clone Legion, or Insurrection
Legolas's Quick Reflexes is definitely worth consideration
The Fallout sets serialized Bobbleheads (/500) have little in-game use, but their value is based 100 percent on the brand
For instance, I predicted Bartz and Boko would be Partner cards, but instead they share a card