The way they're played is to stall with Chansey while attaching a Fire Energy to Moltres every turn and then scooping Chansey up when it gets too much damage, using Wildfire, putting Chansey back down, scooping Moltres up, putting Chansey out, attaching Fire Energy to Moltres, etc
Its a 3-mana instant that forces a player to exile all lands in their graveyard
That scales quickly enough to become imposing, so I like this a lotthough I wouldnt bother with it outside of multiplayer
Additionally, you can open special dragonscale foil versions of these fetch lands in Collector Boosters, each with different artwork than their non-foil and traditional foil counterparts
It appears to be a sort of burning purple fire that drips like water, matching the colour pattern and shape language of Amethyst ink
Board wipes, targeted exile, and conditional removal help white decks recover even when the board gets out of hand