Each player puts a vow counter on a creature they control and sacrifices the rest. Each of those creatures can't attack you or planeswalkers you control for as long as it has a vow counter on it.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)I — Destroy target nonland permanent an opponent controls.II — Search your library for a Forest card, put it onto the battlefield tapped, then shuffle.III — Creatures you control gain deathtouch until end of turn.
Raging Ravine enters tapped.: Add or .: Until end of turn, Raging Ravine becomes a 3/3 red and green Elemental creature with "Whenever this creature attacks, put a +1/+1 counter on it." It's still a land.
FlyingWhen Angel of the Ruins enters, exile up to two target artifacts and/or enchantments.Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)
ReachWhen Skyfisher Spider enters, you may sacrifice another creature. When you do, destroy target nonland permanent.When Skyfisher Spider dies, you may gain 1 life for each creature card in your graveyard. If you do, exile Skyfisher Spider from your graveyard.
FlashFlyingWhen Restoration Angel enters, you may exile target non-Angel creature you control, then return that card to the battlefield under your control.
First strike (This creature deals combat damage before creatures without first strike.): Attacking creatures you control get +X/+X until end of turn, where X is the number of attacking creatures.
Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)
Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel., Sacrifice an artifact or creature: You gain 1 life and draw a card.