clear id card sleeves Shielded Sleeve CARD PROTECTOR 25 Pack - Clear Vertical

Edit: In an even more recent example, the new Curse Necrofear work with a similar premise, freely resurrecting itself during the End Phase

Be sure to have some draw effects handy to keep this effect fueled - you can use it as many times per turn as you want

Aether Barrier Aether Barrier taxes any deck trying to deploy fleets of creatures

Legendary Creature - Human Warlock Sac Outlet (CTRL to add secondary) Tokens Felisa, Fang of Silverquill Flying Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Whenever a nontoken creature you control dies, if it had counters on it, create X tapped 2/1 white and black Inkling creature tokens with flying, where X is the number of counters it had on it