mtg gift a card keyword:"gift" · Scryfall Magic: The Gathering Search Return Gift of Immortality to the battlefield attached to that creature at the beginning of the next end step. Magic The Gathering Trading Card

Even if you kill it, a decent deck runs powerful mana rocks like Gilded Lotus and Dreamstone Hedron to power out more big stuff or the Wanderer post-Commander Tax

Cloud, Midgar Mercenary Rarity: Mythic Rare TYPE: Legendary Creature SUBTYPE: Human Soldier Mercenary CMC: 2 Mana cost: USD: $280.81 EUR: 239.73 TIX: 0.00 EDHREC RANK: 1787 (2/1) When Cloud enters, search your library for an Equipment card, reveal it, put it into your hand, then shuffle

Fell Stinger also has Deathtouch which means it can also stick around as a potent blocker if you can Exploit another creature

And once you add blink effects or reanimation, the engine gets even harder to stop

Dead Man's Chest