If youre looking to crush an opponent with card advantage, this is your answer
Umezawa's Jitte, Walking Ballista, Consul Flagship and the various colourless options are hardly cheap or mana efficient ways of doing what Arc Trail does
Put the rest into your discard
Once you mill most of your library, it becomes super easy to reanimate a bunch of things for free because whenever you sacrifice creatures to flashback Dread Return, you get a bunch of Zombie tokens from your Bridge from Below, which in turn allows you to flashback even more copies of Dread Return until you win the game with one big combo-esque turn
Fees and turnaround times eat into your wallet, so do the math first
Excalibur II This one-drop colorless life-gain caring Equipment with a cost of three will put a counter here for each life you gain and then the dork you equip gains a size boost equal to that charge count