This goes right into Voltron builds or equipment-heavy decks
A lot of white decks are creature-heavy, so having a flying body that helps find you more value creatures will just make sure your gameplan continues to chug along
Which decks do you like for running no max hand size cards
On the other hand, it activates at your end step, making sure that it happens at least once before you pass the turn to the enemy, and Magic's power creep says that 5-drops and lower are starting to get out of hand
In this matchup too, Darkrai VSTAR is a fairly solid attacker: it can KO Mew VMAX easily thanks to Weakness, while its HP make it harder to KO (Roaring Moon ex has 230 HP, so if the Mew player uses three Power Tablets on Darkrai VSTAR, they wont be able to deal with Roaring Moon)
On each opponents upkeep, you can give them control of Slicer, untap it, and goad it