Card Destruction
If you want to attack youll likely end up Selenya some percentage of the time, though for the most part Im sticking to the usual mana acceleration and big-stuff plan
A deck may appear frequently because it is affordable, familiar or recently released, while another strategy may produce excellent results with fewer players
While Tocasia's Welcome is far from being our mighty green artifact, it can still provide you with enough card draw through the course of a game to justify running it, especially if you use creatures with flash like Cathar Commando that can be played on your opponents turn to draw a card
At minimum, when Lumra enters the battlefield, youre likely to get at least a couple lands into play from your graveyard after milling four cards
The reason why Wizards of the Coast used it over Partner is two-fold: first, it's flavourful, referencing the name of the group in the show