I'm new to Magic just join the local community recently but I have known Magic since my schooling time.
Am also building a Merfolk deck, been reading up a lot and watch a lot of YouTuber on U/G deck
For this I'll swap out
-
Tishana's Wayfinder for 4
Metallic Mimic (
Merfolk Branchwalker is better)
- Swap out the
Watertrap weaver and
Shapers of Nature either with
Vineshaper Mystic (+1/+1 up to two target) or
Jade Guardian (+1/+1 and Hexproof)
- play 4
Herald of Secret Streams (cos it's awesome, btw you have the chance to put him out all your field is full of +1/+1 army)
- For me I don't really care about flying cos if you're playing Merfolk, they don't give a sh*t of the opponent just put out 1 and 2 drops ASAP and keep drawing cards with
Chart a Course,
Supreme Will, Branchwalker, if you want to have more protection can use
Blossoming Defense +
Spell Pierce, if opponent gonna use flying? Pay 3 more mana cost by using
Supreme Will which you definitely wanna play 4 each.
- You can also use
Crushing Canopy to take out annoying flying creatures
-
Tempest Caller also a good one, often this card becomes the tie breaker
It's just my observations and tests and my opinions, whenever I edited the deck I'll test drive it with someone at the local store.
Try it out and make sure it suits your play style, don't have to follow everything.
Most importantly enjoy Magic XD