Once upon a time, I was a young man looking over his cards. Most of them were Urza's Saga and Mercadian Masques, as those where what I got the most of before I stopped buying cards entirely. The cards Furious Assault and Saprazzan Outrigger jointly caught my eye, and for the first time in my life, I designed a deck to a purpose--actually decided ahead of time what I wanted to do and crafted the cardlist to match. The resulting deck wasn't the greatest, but it was still mine, and I enjoy playing it. Then Tarkir block came out and gave me so many new tools that I decided to start over. (I also noticed that my list of decks here is seriously short on Red, despite it and Blue being the most-represented colors in my actual box of paper Magic.) So here we are: Saprazzan Fury 2.0.
The original blue half of the deck remains basically the same: almost all of it focuses on returning my own creatures to hand. (They also, amusingly enough, all use the original card frames.) The second half is now Impact Tremors, which damages the opponents whenever I play creatures. The fact that it works with creature tokens, and is cheaper than Furious Assault, is actually just a bonus; Wizards' REAL gift to this deck are the Dash creatures. The only Red creature left from Mercadia is Kyren Sniper, but he can wreak absolute havoc with Sigil of Sleep on him. This makes him a removal magnet, but that protects your Imaginary Pet, who in this deck essentially reads as "4/4 Defender, Dash 1U."
This deck also established my love of budget deckbuilding; as I collated Gatherer results, I noticed that much of what I was grabbing down for use was Common, and decided to run with it. What I discovered is that you really can build effective (though not necessarily tournament-winning) decks on small amounts of money. For a short time Warbringer was in here, but once I removed it again, the deck returned to its original state: 56 commons and 4 Imaginary Pets.
For a better take on this idea, see Balaam__'s Rush’И’Attack!.