It may seem like a heavy downside to discard your entire hand, but countless times you will end up in a situation where you have nothing to work with in your current hand and just need a completely fresh one
During 2010's Black & White series, the toughest Pokmon of the time had a maximum of 140 HP, only 20 HP higher than the original set's Charizard
Whenever Rolling Hamsphere attacks, create three 1/1 red Hamster creature tokens, then it deals X damage to any target, where X is the number of Hamsters you control
Greenbelt Rampager This is a great early game play to get some Energy and get out an early game 3/4 creature to do some damage
If a permanent with one or more time counters on it becomes a copy of a permanent with vanishing, it will vanish as normal
Taken together, these two cards dont show Yuna becoming stronger