This is my deck - based on Cards I own - (I plan on getting 1-2 Hydroid K., replacing the harpooner and chupacabra (moving harpooner to side instead of 1 Duress or Dive Down, because of rise of blue aggro decks in my area and hard matchup for me)
Ideal play: T1: llanowar elvers, T2: Hadana's Climb, T3: Wildgrowth Walker + Merfolk Branchwalker, T4: Vivien Reid or Jadelight Ranger, T5: Carnage Tyrant (can be sooner if u drop more elves - depends on your staring hand and draws)..
By turn 4-5 You have flipped Hadanas Climb and dropped Carnage Tyrant, which then can attack with Climb buff as 14/13 hexproof, Flying.. 2 attacks and enemy dies (or if you attack with walker+branchwalker before, it may only need one attack to finish game in round 5-6)
Example of my Side vs ...
(precise side depends if enemy plays creatures, planeswalkers, flyers etc..)
Blue aggro
Out: 1 Carnage Tyrant, 1 Vraska, Relic Seeker, 1 Climb, 1 Assassins Trophy
In: 2x Ritual of Soot, 2x Crushing Canopy
Red Aggro
Out: 1 Carnage Tyrant, 1 Vraska, Relic Seeker, 1 Climb, 2 Kraul Harpooner,
1 Assassins Trophy
In: 2 Thrashing Brontodon, 2 Ritual of Soot, 2 Duress
Drakes:
Out: 1 Carnage Tyrant, 1 Vraska, Relic Seeker, 1 Climb, 1 Wildgrowth Walker
In: 2x Crushing Canopy, 2x Disdainful Stroke
Control:
Out: 3 Wildgrowth Walker, 2 Ravenous Chupacabra, 2 Cast Down,
2 Kraul Harpooner
In: Immortal Sun, Eldest Reborn, 2x Disdainful Stroke, Assassins Trophy,
1x Dive Down, 3x Duress
Gates:
Out: 2x Kraul Harpooner, 1x Wildgrowth Walker
In: 2x Thrashing Brontodon, 1x Assassin's Trophy