Obzedat, Ghost Council

Return target nonland permanent you don't control to its owner's hand. Overload 6U (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, exile the top card of your library. Until end of turn, you may play that card.

As an additional cost to cast this spell, sacrifice an artifact. Shrapnel Blast deals 5 damage to any target.

Search your library for a land card, reveal it, put it into your hand, then shuffle.

Constellation — Whenever this creature or another enchantment you control enters, draw a card.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

Trample When this creature dies, create three 5/5 green Wurm creature tokens with trample. When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.

Flying Sacrifice this creature: Counter target instant or sorcery spell unless its controller pays 1.