Because it shows us which cards the dealers felt were going to be the most important going forward by having their buylists reflect that confidence all at once (due to the massive influx of tons of people opening expensive cards and wanting to offload them)
While Dire Tactics is almost certainly better than Vendetta and probably better than Orzhov Charm as well, if you don't have a Human on the battlefield, the loss of life is a big deal in most matchups
(1) The ATK of all other Z-ONE and Timelord monsters you control becomes 4000
We do not observe a significant decline in value and price over time
This archetype loves sending its monsters to the graveyard for valuable effects
One of the things I like about myriad is how many things it combos with enter-the-battlefield effects, sacrifice outlets, token synergies, aggro strategies, you name it