They can also help to protect your win conditions by rebuying them
Summing all of this up, I would not expect the velocity of Full Art Trainer values to slow down
Having two of them in the opening was leading to awkward moments when you were losing to sacrificing your own lands
Turn it face up any time for its mana cost if it's a creature card.) Sacrifice this creature: Until end of turn, face-up nontoken creatures you control gain "When this creature dies, manifest the top card of your library." Sacrifice this creature: Until end of turn, face-up nontoken creatures you control gain "When this creature dies, manifest the top card of your library." Creature - Elemental Yarus, Roar of the Old Gods Other creatures you control have haste
Ramos, Dragon Engine by Joseph Meehan
That might help prevent some of these reprints from tanking completely, but a large portion of this sets value is going to come from the returning cards regardless