You're going to be running enchantment creatures, and Yuna gives enchantress decks a bit more of an aggressive playstyle by giving them lifelink
Unfortunately it also foregoes all the relevant X-spells, as there are none in monobrown (unless you count Rocket Laucher, but seriously that card is ONLY relevant if you can produce unlimited amounts of mana
For example, the Terapagos ex card above has the Crown Opal attack, which costs 1 Grass, 1 Water and 1 Lightning Energy to use, but it deals 180 HP of damage and also stops all attack damage done to the Terapagos ex on your opponents next turn, if dealt by a Basic, non Colorless Pokmon
On the other hand, the photo on the right shows a modern card on which the letter M was written with a normal pen
Complete Walkthrough with Detailed Maps The secrets of every club revealed