Nahiri, the Harbinger - [Foil] Commander Masters (CMM)[+2]: You may discard a card. If you do, draw a card. [2]: Exile target enchantment, tapped artifact, or tapped creature. [8]: Search your library for an artifact or creature card, put it onto the battlefield, then shuffle. It gains haste. Return it to your hand at the beginning of the next end step.

that player loses 2 life unless they pay {2}

roll X six-sided dice

{T}: Add three mana of any one color

it's legendary in addition to its other types

any other player may pay that spell's mana cost

Flying Echo {2}{B} (At the beginning of your upkeep

Many sigils

(Attacking doesn't cause it to tap

When Phyrexian Delver enters the battlefield

you may reveal it

Thassa isn't a creature

" Then if you control five or more Rats