This is not only a fun way to play a commander game (for the pilot and the other players), but it's also very effective
Red Tiger Mechan Haste right out of the gate makes Red Tiger Mechan a solid curvetopper, and the cheap warp cost lets it blink for pseudovigilance or dodge sorcery-speed removal
Wizards of the Coast stopped printing efficient land destruction like this years ago because, well, it turns out people actually like playing their spells
And as you transform Sephiroth, you create an Emblem with his Blood Artist effect on
Plenty of playable black spells also happen to throw a few cards from your deck into the graveyard as a bonus, and mechanics like delve, dredge, escape, undergrowth and unearth all reward you for it
(The finger is chosen by its owner and can't roll dice or touch cards.) The Agents of S.N.E.A.K.Sinister Nerds Eliminating All Knowledge