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
Embalm and Externalize appear as "near-hand castables" in the app, while exert - a keyword allowing creatures to use abilities at the cost of being unable to untap (and therefore defend) on the next turn - is displayed in a different way to standard tapped cards
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 exception to this is when you create a token copy of another object
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