Ive played him with the obvious cards like Risen Reef, Healer of the Glade, Cloudkin Seer, Overgrowth Elemental, Golos, and of course Agent of Treachery, but Ive also gone deep playing him alongside the surveil cards like Disinformation Campaign and Dream Eater to enchantment payoffs like the omens and Setessan Champion
In a format where value trades matter, Selenia gives you more options and more breathing room to trade up into your opponents creatures while protecting yourself from counterattacks
Kind of like Treasure Chest, this card is more fun than good
At the beginning of the next end step, return each of them to the battlefield under its owner's control
To make the most of this effect, Im including a few Lure effects to force every available creature to block