These arguments could get heated, but all in all it was a much safer, calmer time
One card in each pair of meld cards has an ability that instructs you to exile the two cards and meld them
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Danitha Capashen's last ability)
The Enchanted version of Elsa depicts her fully embracing her powers, sending ice magic all over the place with her innate skill
Combine this with an inflated interested in collectible TCGs' rarest targets spurred by the pandemic and, while nowhere near its peak, maintaining a fair bit of popularity on streams and YouTube
Here is how the combo works