Might I suggest Opt or Brainstorm or Gitaxian Probe
It's colorless, so it can go into all builds, it doesn't arrive tapped You can tap it with two to sacrifice a Desert, often it, to exile all graveyards, yours too
Overall, Seismitoad has intriguing damage potential, which makes it among the best single-prize Pokmon in the format
It as great synergy with cards like Sapling of Colfenor and Orchard Warden that help us gain enough life to turn it into an amazing mana cost reducer for our Treefolk Tribal
If you go second, you cant use this attack during your first turn
Mega Zygarde ex - Fighting - 310 HP Pokmon - Basic FFF Gaia Wave 200 During your opponent's next turn, this Pokmon takes 30 less damage from attacks (after applying Weakness and Resistance)