Regal Force and Shamanic Revelation should net us anywhere from 8-12 creatures and could draw us half of our deck if things are going well
Its landfall effect is to give you one life great for when you're ramping, and a small boost to try and ensure your next land drop through scrying if you're not
Im admittedly at a loss for exactly what I would personally do with the nightmare beast as my general, in that just about any creature or mechanic with counters in the rules text could be a contender here
That said, very little can beat opening a pack and finding these in the early days as the lore of their power had spread quickly among players
You can add Maui, Hero to All, which is a Reckless/Rush character that acts a bit like a human Dragon Fire - perfect for getting around characters with Ward
With the right flash support, Katara, Waterbending Master becomes the worlds greatest Scroll Thief, and it doesnt even have to connect in combat to draw a handful of cards