These feel different from the alternate-cost free spells were looking at here
It consistently lands on lists of good planeswalkers because it generates value without asking for complicated board states or fragile combos
For example, if an effect has given Bear Cub, a 2/2 creature, -4/-0 so that it's a -2/2 creature, doubling its power and toughness gives it -2/+2, and it becomes a -4/4 creature
or when the player's Pokmon is damaged, there is a certain chance to transfer part of the damage to itself to protect its teammates
When all else fails, you can always use the "speed bump": a Thrarin, Dwarven Smith (1U27) , Sam, Son of Hamfast (1C311) , or Pippin, Hobbit of Some Intelligence (1R307) can absorb one whole skirmish and leave the rest of your fellowship pristine