Hexproof, indestructible, phasing, or a free sacrifice-and-return. If your deck leans on one creature, you need several of these.
96%Swiftfoot Boots Artifact — EquipmentEquipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and$2.00
92%Lightning Greaves Artifact — EquipmentEquipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}$3.67
95%Heroic Intervention InstantPermanents you control gain hexproof and indestructible until end of turn.$16.68
83%The One Ring Legendary ArtifactIndestructible When The One Ring enters, if you cast it, you gain protection from everything until your next turn. At the beginnin$116.93
94%Boros Charm InstantChoose one — • Boros Charm deals 4 damage to target player or planeswalker. • Permanents you control gain indestructible until end
93%Flawless Maneuver InstantIf you control a commander, you may cast this spell without paying its mana cost. Creatures you control gain indestructible until
94%Akroma's Will InstantChoose one. If you control a commander as you cast this spell, you may choose both instead. • Creatures you control gain flying, v$15.47
94%Mithril Coat Legendary Artifact — EquipmentFlash Indestructible When Mithril Coat enters, attach it to target legendary creature you control. Equipped creature has indestruc$32.20
93%Inspiring Call InstantDraw a card for each creature you control with a +1/+1 counter on it. Those creatures gain indestructible until end of turn. (Dama$0.36
88%Whispersilk Cloak Artifact — EquipmentEquipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.) Equip {2}$2.07
94%Dawn's Truce InstantGift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) You$9.40
81%Toski, Bearer of Secrets Legendary Creature — SquirrelThis spell can't be countered. Indestructible Toski attacks each combat if able. Whenever a creature you control deals combat dama$7.90
95%Snakeskin Veil InstantPut a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abil$0.23
95%Tamiyo's Safekeeping InstantTarget permanent you control gains hexproof and indestructible until end of turn. You gain 2 life. (A permanent with hexproof and $4.55
89%Commander's Plate Artifact — EquipmentEquipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity. Equip commander {3}$44.54
93%Plaza of Heroes Land{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a legendary spell. {T}: Add one mana of any color among$4.04
95%Mother of Runes Creature — Human Cleric{T}: Target creature you control gains protection from the color of your choice until end of turn.$13.86
89%Veil of Summer InstantDraw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and perm$4.75
89%Sword of Feast and Famine Artifact — EquipmentEquipped creature gets +2/+2 and has protection from black and from green. Whenever equipped creature deals combat damage to a pla$41.47
85%Brotherhood Regalia Artifact — EquipmentEquipped creature has ward {2}, is an Assassin in addition to its other types, and can't be blocked. Equip legendary creature {1} $9.61
96%Unbreakable Formation InstantCreatures you control gain indestructible until end of turn. Addendum — If you cast this spell during your main phase, put a +1/+1$1.33
92%Darksteel Mutation Enchantment — AuraEnchant creature Enchanted creature is an Insect artifact creature with base power and toughness 0/1 and has indestructible, and i$1.22
93%Selfless Spirit Creature — Spirit ClericFlying Sacrifice this creature: Creatures you control gain indestructible until end of turn.$0.42
80%Hexing Squelcher Creature — Goblin SorcererThis spell can't be countered. Ward—Pay 2 life. Spells you control can't be countered. Other creatures you control have "Ward—Pay $21.56
82%Purphoros, God of the Forge Legendary Enchantment Creature — GodIndestructible As long as your devotion to red is less than five, Purphoros isn't a creature. Whenever another creature you contro$30.75
83%Innkeeper's Talent Enchantment — Class(Gain the next level as a sorcery to add its ability.) At the beginning of combat on your turn, put a +1/+1 counter on target crea$10.45
96%Tyvar's Stand InstantTarget creature you control gets +X/+X and gains hexproof and indestructible until end of turn. (It can't be the target of spells $1.27
93%Hammer of Nazahn Legendary Artifact — EquipmentWhenever Hammer of Nazahn or another Equipment you control enters, you may attach that Equipment to target creature you control. E$15.05
93%Flare of Fortitude InstantYou may sacrifice a nontoken white creature rather than pay this spell's mana cost. Until end of turn, your life total can't chang$4.85
92%Champion's Helm Artifact — EquipmentEquipped creature gets +2/+2. As long as equipped creature is legendary, it has hexproof. (It can't be the target of spells or abi$3.15
Prices and legality come from Scryfall. Every card here was scored by the same search that runs when you type a question.