[2] Convoke allows you tap creatures you already have in play to help pay the casting cost of a card
If you do not have Koga to hand, you can use X Speed to reduce the Retreat Costs of these Pokemon, but Weezing and Muk will still need two Energy attached to retreat in this instance
One example is the card called Slippery Bogle, a creature with Shroud and Hexproof
Amass was introduced in WAR but later changed to be more specific
P/T Number 19 Language English Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (10/7/2022) Protection from everything means that commanders you control can't be the target of any spells or abilities, they can't be blocked, nothing can be attached to them, and all damage that would be dealt to them is prevented