Crystal Skull, Isu Spyglass

Freerunning 1B (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) When this creature enters, you draw a card and you lose 1 life.

At the beginning of combat on your turn, if you control a legendary Assassin, this creature gets +1/+0 until end of turn and can't be blocked this turn.

As this enchantment enters, choose a creature type. Creatures of the chosen type have fear. (They can't be blocked except by artifact creatures and/or black creatures.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever Adrestia attacks, if an Assassin crewed it this turn, draw a card. Adrestia becomes an Assassin in addition to its other types until end of turn. Crew 1

Defender, reach Leap of Faith — 3: Target creature gains flying until end of turn.

During your turn, this creature has first strike. (It deals combat damage before creatures without first strike.) 2: This creature gets +1/+0 until end of turn.

Deathtouch Other Assassins you control get +2/+0. Disguise BR (You may cast this card face down for 3 as a 2/2 creature with ward 2. Turn it face up any time for its disguise cost.)

Whenever Arbaaz Mir or another nontoken historic permanent you control enters, Arbaaz Mir deals 1 damage to each opponent and you gain 1 life. (Artifacts, legendaries, and Sagas are historic.)