
Instant
If you control a commander, you may cast this spell without paying its mana cost.
Creatures you control gain indestructible until end of turn.

Premier white protection instant, phases out your board to dodge wraths.

Green equivalent giving indestructible and hexproof to your board.

Cheap instant granting indestructible to all your permanents.

White instant giving creatures indestructible, with bonus anthem option.

Cheap white instant granting indestructible to your creatures.

Phases out your nontoken permanents, free if you control commander.

White instant giving protection/indestructible, free with a commander out.

White instant protecting key creatures from board wipes.
→ Infinite tapped Treasure tokens, Infinite damage to creatures
→ Infinite +1/+1 counters on a creature, Infinite damage to one opponent
→ Infinite +1/+1 counters on a creature, Infinite damage to one opponent
→ Infinite +1/+1 counters on a creature, Infinite damage to one opponent
→ Infinite +1/+1 counters on a creature, Infinite damage to one opponent
It doesn't matter whose commander you control. Any one will do. If you have two commanders, you just need to control one of them.
Once you begin casting this spell, players can't take any other actions until you're done casting it. Notably, they can't try to remove the commander you control to make you pay its cost.