Magic represents this with transforming cards, like the one below
As a reminder, characters who have been played on the same turn cannot be used for any ability - including questing
Powerful summons, such as beings like the icy Shiva or the fiery Ifrit
Kefkas ability to wear down your opponents while helping you keep a steady supply of new cards feels extremely relevant to the current midrange meta in cEDH, although Im not sure that he will outperform Tymna the Weaver // Kraum, Ludevics Opus
This can lead to a massive surge of lore and a wide board
The starter decks for debut set The First Chapter each had their own ways to win, whether by rushing to get the most lore, holding back your opponents or getting lots of ink down for big characters