Sengir, the Dark Baron

T, Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of those cards into your hand and the rest into your graveyard. Partner (You can have two commanders if both have partner.)

Response deals 5 damage to target attacking or blocking creature.

Search your library for up to ten land cards, put them onto the battlefield tapped, then shuffle.

T: Add CC.

You have no maximum hand size. T: Add C.

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Flying When this creature enters, reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Flash When this creature enters, copy target instant or sorcery spell. You may choose new targets for the copy.