This can make a huge impact if you can copy a creature with a deadly ETB effect or just copy something massive
However you go about easing into this set, its worth remarking on the quality of the art, which is generally excellent
The better part of Kaust comes from their tap ability, which lets you take an attacking face-down creature and turn it face up without having to pay any extra costs
There are so many +1/+1 counter synergies these days that its incredibly easy to make an oppressively powerful deck with that strategy, and I personally dont like the mental energy required to keep track of all the various triggers those strategies accumulate on the battlefield
If you want to combo win, then you can get infinite mana with Displacer Kitten and Lotus Petal, or you can grind out value by recasting cards like Dross Skullbomb to draw cards turn after turn
Cast Ghostly Flicker targetting Archaeomancer and Peregrine Drake / Palinchron