VigilanceWhenever you cast your second spell each turn, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card."): Add . Activate only during an opponent's turn.
FlyingWhenever Thief of Sanity deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, then put the rest into their graveyard. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.
Battlefront Krushok can't be blocked by more than one creature.Each creature you control with a +1/+1 counter on it can't be blocked by more than one creature.
FlyingAt the beginning of your upkeep, each player reveals the top card of their library, loses life equal to that card's mana value, then puts it into their hand.
Flying (This creature can't be blocked except by creatures with flying or reach.)Whenever Trusted Pegasus attacks, target attacking creature without flying gains flying until end of turn.
FlyingWhenever Memory Vampire deals combat damage to a player, any number of target players each mill that many cards. Then you may collect evidence 9. When you do, you may cast target nonland card from defending player's graveyard without paying its mana cost.