pharaoh's servant booster box Sold at Auction: YuGiOh Unlimited 9 cards per pack Yu-Gi-Oh! Pharaoh's Servant 25th Anniversary

They're not removed if the creature regenerates or the turn ends

For all intents and purposes, this turns off combat for a turn, acting as a pseudo-fog stapled to a wrath

This means you can only cast them on your turn, during one of your two main phases, and only when there are no effects currently on the MTG Stack (about to resolve)

Bump in the Night Bump in the Night is not a card I expected to put on the "best flashback spells" list, but here it is

How to Build and Manage Your Collection Once you start buying cards, you're not just a buyer anymoreyou're a collector

Other cards in your deck should work to give you advantages