Silver Raven

Flying
When Silver Raven enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Mana Leak

Counter target spell unless its controller pays {3}.

Choose one —
• Foil Their Scheme — Counter target spell.
• Learn Their Secrets — Draw two cards, then discard two cards.

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

As long as it's not your turn, spells you cast cost {1} less to cast.

Target creature gets +3/+3 until end of turn.

Flying
Whenever you cast a noncreature spell, Sky Theater Strix gets +1/+0 until end of turn.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Counter target spell. Untap up to four lands.

Target creature gets +2/+2 until end of turn. If you control four or more creatures, that creature gets +4/+4 until end of turn instead.

Tap target creature. Scry 1.
Draw a card.

Magecraft — Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on Quandrix Pledgemage.

Draw two cards.
Cycling {U} ({U}, Discard this card: Draw a card.)

Target creature gets +4/+4 until end of turn.

{T}: Add {C}. Spend this mana only to cast an instant or sorcery spell.

Gray Harbor Merfolk can't be blocked.
Gray Harbor Merfolk gets +2/+0 as long as you control a commander that's a creature or planeswalker.