The first one is actually pretty strong it lets us cast a spell from cards in our graveyard that was milled this turn
You may choose new targets for the copy., : Copy target instant or sorcery spell you control
Legendary Creature - Human Warrior Creatures Matter (CTRL to add secondary) Land Land (CTRL to add secondary) Legend Payoff Cadric, Soul Kindler The "legend rule" doesn't apply to tokens you control
Nadu, Winged Wisdom This incredibly problematic card has earned its ban in most formats, Commander included
Since Elves have so much ramp and cheap creatures, you can amass a giant battlefield to then cast other spells to give them stat-boosts
Plus, activating her commander ninjutsu ability will only ever cost one blue and one black mana, as commader tax doesnt affect abilities