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.
FlashWhen Selfless Squire enters, prevent all damage that would be dealt to you this turn.Whenever damage that would be dealt to you is prevented, put that many +1/+1 counters on Selfless Squire.
Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)Return target card from your graveyard to your hand. You gain life equal to that card's mana value. Exile Healing Technique.
Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)Destroy target nonland permanent. Its controller creates two Treasure tokens.
Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)Return target card from your graveyard to your hand. You gain life equal to that card's mana value. Exile Healing Technique.
Discard a card, then draw a card. When you discard a nonland card this way, Fiery Encore deals damage equal to that card's mana value to target creature or planeswalker.Storm (When you cast this spell, copy it for each spell cast before it this turn.)
Flying: This creature gets +1/+0 until end of turn.: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.
