I can also envision a Squirrel deck that uses some combination of Grafted Skullcap, Ensnaring Bridge, and Meekstone to throw a barrage of expendable Squirrel troops at an opponent while keeping you safe from harm
Older cards don't have a set code so, you need to know the symbol for each set to be able to tell on-sight, but a quick search over on Gatherer can help you out when youre not sure
11 Tor Wauki The Younger Gain Life, Deal Damage, And Get Your 2-For-1s Sitting at five mana is Tor Wauki the Younger, a fun throwback to the Legends card, an absolute powerhouse for a burn deck
Then, for its final two chapters, the next creature spell you play gains haste which can provide some stunning surprise attacks and delivers yet more ammo for mono-red strategies (or Jeskai Prowess strategies) to run roughshod over Standard for the foreseeable future
Rhystic Study is perhaps the most infamous option that Zur can fetch up
The part where it becomes a problem is with another card in Standard: Agathas Soul Cauldron