Aurora Shifter [Modern Horizons 3 Commander] Human Druid Wizard Set: Zendikar Rising Promos Type:

Set: Zendikar Rising Promos Type: Instant Rarity: Rare Cost: {2}{B} Each opponent sacrifices a creature or planeswalker with the highest converted mana cost among creatures and planeswalkers they control

Then I got to thinking

Sturdy as a rock

Set: Commander 2020 Type: Creature — Ooze Rarity: Rare Cost: {G}{G}{G} Indestructible

So great is his certainty that mere facts cannot shake it

Aurora Shifter [Modern Horizons 3 Commander] Human Druid Wizard Set: Zendikar Rising Promos Type:Set: Modern Horizons 3 Commander Type: Creature Shapeshifter Rarity: Rare Cost: {1}{U} Whenever Aurora Shifter deals combat damage to a player, you get that many {E}. At the beginning of combat on your turn, you may pay {E}{E}. When you do, Aurora Shifter becomes a copy of another target creature you control, except it has this ability and "Whenever this creature deals combat damage to a player, you get that many {E}."