Getting much out of this requires having too much spare mana which is not a thing one associates with cheap aggressive monsters
Channel and Sneak Attack don't have similar rules text, for example, but they overlap in their ability to do broken things with big colorless creatures, so you might pick up a Sneak Attack to support your early-pick Channel, and then prioritize the legendary Eldrazi creatures, Blightsteel Colossus, and Sundering Titan over a card like Karn Liberated, which only works with the Channel plan
Teferi, Temporal Pilgrim probably wont be doing anything in older formats, but it looks fantastic for Standard and Commander
The Lost Caverns of Ixalan Draft Booster Pack
Theres dragon bards in Korlessa, Scale Singer and Draconic Muralists, and theres sacrifice bards in Kalain, Reclusive Painter and Crime Novelist
TARDIS The TARDIS comes close to excellence but falls so far away