Others like Stoneforge Mystic and Kellan, the Fae-Blooded play a huge role due to their versatility, with the former being key to put big equipment into play for just 2 mana at instant speed
For board wipes, you can use them before Avacyn comes around if an opponent(s) is becoming too much of a threat with their battlefield presence
I was just the person in R&D that cared the most, so I took on the burden of making sure we weren't creating cards we weren't supposed to
REAL It depends on how old the card is, what colors are on the front, and whether the card has a blue core
The recurring value-oriented nature of Sun Titan targets lend themselves naturally to Restoration Angel-based strategies, such as Yuuya Watanabes U/W Control deck from Worlds 2015: Creatures (16) Lands (26) Spells (18) While Dragonlord Ojutai is sturdier, Sun Titan can be invaluable for going over the top of opponents, for actually ensuring hes got enough advantage to close it out
Street Urchin and Tavern Brawler are good in red, but so are others