Extra mana and potentially extra cards add up very quickly, enough that decks try to pack in extra answers to it
Think you're going to win
Foundations is meant to be a solid way to get into Magic: The Gathering, with a healthy mix of simple cards to learn how to play, and more complex ones to show you what comes next
She's an elven Oath of Ancients paladin dedicated to protecting the natural world and the joy and wonder within it
Instead of stating that you can cast the creature once from outside the game, the new rules state, "...you may put it into your hand from outside the game for 3 as a sorcery." Thus, instead of directly casting this creature from the Companion Zone, you first need to pay three generic mana to bring the creature into your hand
If it deals combat damage to a player (or dies), you get to proliferate, potentially adding another +1/+1 counter among any other counters you ramp up