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In other words, if you cast Bloodbraid Elf with Flash during your opponent's End Step and flip into an Ichor Wellspring, you can cast the Ichor Wellspring (though you'll draw the card off the Wellspring's Enters effect before the Elf resolves!)

particularly, when other Elf cards are played, theres an immediate bonus, and the fact that you can add any mana to it to then cast spells and activate abilities could make for a devastating combo, if played correctly

It feels like it might actually be the real deal to me, especially as land tokens are also relatively new, so this might be one to keep an eye on

Then you'll add that mana too - this is an essential for Spellslinger brews since it will trigger your Guttersnipes and such too, unlike dorks that recur