This is a Squirrel and this is a commander, but this is NOT a Squirrel Commander
Classic lines like Dark Ritual into Entomb into Reanimate bring back Griselbrand on turn one, often backed by Force of Will to protect it from Swords to Plowshares or graveyard hate
They explore the past by poring over archaeological artifacts, drawing magical energies from ancient tomes, and summoning the spirits of long-dead historical figures
With proper sacrifice outlets, you can even remove their creatures entirely for your own benefit
Note that the card deals with what was then all the permanent types
If you cast it during an opponents main phase, there are two additional combat phases, but that opponent gets to attack during those combat phases, not you