Mortify

Guardian Protocols — 3B, Sacrifice this creature: Return all legendary creature cards from your graveyard to your hand.

Choose one or more — • Destroy target artifact. • Destroy target creature. • Kill! Maim! Burn! deals 3 damage to target player.

First strike, vigilance Concealed Position — When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Flying Sorcerous Elixir — Whenever this creature deals combat damage to a player, copy the next instant or sorcery spell you cast this turn when you cast it. You may choose new targets for the copy.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Endless Swarm — Whenever a land you control enters, you may pay 2G. If you do, return this card from your graveyard to your hand.

Lands you control have "T: Add one mana of any color." T: Add one mana of any color.

Flash Vigilance Aegis of the Emperor — Commanders you control have protection from everything.

Flying Skyswarm — At the beginning of your end step, if a creature entered the battlefield under your control this turn, create a 1/1 blue Tyranid Gargoyle creature token with flying.