Theres even a location card, Tropical Rainforest, that forces opposing damaged characters to challenge if able
Its easy to amass a lot of mana with cards like Gemhide Sliver, which you can then funnel into the Queens ability to make a massive board
Elsa Spirit of Winter utilizes the highly effective Shift mechanic, which allows players to pay a discounted cost to place her directly on top of a smaller, pre-existing Elsa card to activate her abilities much earlier in the game
I have to assume this will often enter the battlefield as an indestructible 8/8 or 9/9 for five mana
It also forces them to draw an extra card during their draw phase, which means an extra point of damage each turn
And even if you arent competing at this level, If you are interested in playing Standard, now is the time to dive in