Seeing heavy play in Standard, the Elder Dragon enters with a Treasure token, with the option of casting Instant/Sorceries off your artifacts
One particularly damning thing to note is this chart: This table shows that with 7 Swamp and 7 Plains, you will have the required Plains to cast a turn-3 Territorial Hammerskull only 85.9% of the time (on the play, in absence of mulligans or card selection)
Until end of turn, target creature gains trample and gets +1/+0 for each card you've drawn this turn
This means that as long as either of these permanents are in play, for each unblockable Rogue that player controls, that's one additional card they can reliably draw each turn
in fact, the standard casting only draws you one card, which means its closer to card selection
Commanders that benefit from graveyard protection are Muldrotha, the Gravetide and The Master, Transcendent to name some Sultai options