Various cards can add further power to the deck, such as the Goblin Anarchomancer, which makes green and red spells cheaper by one colourless mana, the Mage Slayer, which promises unblockable damage, or the Rhythm of the Wild enchantment, which protects your own creature spells from counterspells
Battlefield is destroyed, then other creatures come in and begin killing
Mega Dragonite ex Ability: Sky Transport Once during your turn, you may use this Ability
Again, this inevitably leads to fewer competing eyes for often high-value lots that just get drowned out by thousands of other listings
This effect is simply not one the Arena developers want in the format, with the Flare cycle from Modern Horizons 3 and the envoke Elementals from Modern Horizons 2 all being pre-banned in the format