A lot of balance and care goes into choosing the cost of a card, more than I can express here, but looking for similar effects on existing Magic cards can give you an idea of a fair costfor example, a ramp spell that puts two lands into play ought to cost 4 mana, per Explosive Vegetation
Coming in at #10 with a market price of $15.08, this is one of those Illustration Rares that caught collectors off guard after launch
In Kowals Naya Excalibur deck, he had an absolutely brilliant mana base around Rootbound Crag and Sunpetal Grove where Figure of Destiny was perfectly positioned alongside the Plains and Mountains for Wild Nacatl
1 Collector Pack* for going 3-0, 3 play booster packs for 2-1, and 1 play booster pack for everyone else
Why then is Satyr Wayfinder seeing the most play of any of this kind of card now by a significant margin when it is so similar to Sylvan Ranger, the weakest of all those mentioned here