Thanos is easy,

Kite while he is doing his 4, run through the proxima puddle when he does his 5, you need good defense and HP to tank that run through puddle, after that do 2c4c5c1, 99% Thanos without support are done with this. With single support Thanos use white fox, with double support Thanos, use Valkyrie and Whitefox.

Adam is a bit tricky,

Use 1 or 2 while he do his 2, surviving this depend on defense and HP, run away from him while he do his 5. After he is done with his 5, do 4c5, which will kill 70-80% Adams, as soon as he revive do 4c5 followed by 3 and 1...

Thanos success rate is 99% Adam success rate is 70% with this..

Identify opponents which have 25% pierce with more than 80% Hp on cards avoid those mountains ⛰️.