Nightcrawler, Antman, and Quicksilver are the three I run if I'm not just spamming one drops. I really like Iron Heart as long as the double-on-reveals location is increased appearance, so quicksilver ensuring a one drop to curve into her is nice. Nightcrawler gets around so many "restricted entry" location abilities, and can be a real asshole to play around when buffed. Antman's just strong Mana to power ratio, and is a non-shit top deck after turn one.
I assume some of the advanced card pools will have cards that blow up your own guys, to combo with Nova.