mtg landfall draw a card Tatyova, Benthic Druid Landfall: Draw, then discard. :

You may cast the creature from exile

Thank you for reading, and may your explore triggers give you what youre looking for

If this strategy gets into the long game, then include a card like Raise the Past and get right back to attacking

A party of four taking on Garland is where my journey and Magic: The Gathering FINAL FANTASY's journey started

Reliquary Tower makes sure you wont have to discard any of your good cards

Its important to note that just activating the regeneration ability doesnt exactly mean the creature has been regenerated. The oracle text makes it clear that this gets a +1/+1 counter when it regenerates , so it still needs to die in some way for regenerations replacement effect to actually resolve