Instead of Cycle of Life, try Combine Guildmage, Cytoplast Root-Kin, Emiel the Blessed, Good-Fortune Unicorn, Ivy Lane Denizen, or any other card that just gives creatures a +1/+1 counter whenever they enter the battlefield
This card is a strange pick for a Bonus card though, due to the rarity system
Pokmon TCG Mini Tins are 124 x 76mm and 25mm thick, making them significantly shorter and only 1cm thicker than a standard DVD case (190 x 135 x14mm)
The Pantlaza Commander deck also includes a few cards to help protect the board state
A fun concept could be to allow dual-Ink cards in any deck that uses at least one of its colors instead of both, bringing some of the interesting Disney Lorcana card ideas from one color to a different color combination