Many of the bot algorithms adjust their prices in exactly this way, slowly increasing their price after every sale and slowly decreasing it after every buy
With one other Creature (like Spellseeker for example), you can produce infinite Treasures & ETBs with little effort, which is usually more than enough to get you to the finish line
Charizard V (Darkness Ablaze #19) This Charizard V card was released around the same time that the Sword & Shield games were, being part of the Darkness Ablaze expansion, and is debatably the strongest basic Charizard card variant in existence
It allows you to hold up interactions, such as counter magic or removal
11 can legally be played in Commander and 19 will require you to have a Rule 0 conversation with your playgroup before playing
Like most tutors, Eladamri's Call saw most of its use in decks that would use it to complete their combo so they could go off