It is one of the few cards in the game that has the option to do either on a single card
Its not particularly impressive and may not even make the cut in this day and age of powerful pirates, but its no slouch either way
If no Digimon was deleted by this effect... What situations does If no Digimon was deleted by this effect refer to, specifically
First, we have the five cards that gained the most value in the past 30 days after starting with a Market Price of $40 or less
You'll want to set up turns where Esper Terra generates ten mana with the last chapter, transforms back to Terra, Magical AdeptTerra, Magical Adept, and has haste from one of the several haste enchantments to immediately use six of that mana to transform back to Esper Terra for more copy shenanigans
Or you could take a typal route since all the good elementals are Temur anyway (except, of course, for Solitude)