Tyvar's Stand (ONE)

Instant

Target creature you control gets +X/+X and gains hexproof and indestructible until end of turn. (It can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

Reliable protection and pump for green creature decks. Tyvar's Stand combines evasion and survivability in a single instant, letting you push through damage while safeguarding your best threat from removal or board wipes. The flexibility of scaling with X makes it work in aggressive strategies (pump your attacker before combat) and defensive ones (save a key creature from a sweeper), though it requires you to already have a creature in play and competes with more efficient single-purpose answers like Heroic Intervention in formats where that matters. Solid inclusion in Commander decks built around creature-focused strategies, particularly in green stompy and +1/+1 counter shells.

Phyrexia: All Will Be One — Uncommon