If it's a single-faced card with no mana symbols in its upper right corner (because it's an animated land, for example), its mana value is 0
Consider Nevinyrral's Disk
If you do, put a +1/+1 counter on that creature
Just like any TCG or CCG (you can find out more in our handy guide to the difference between TCG and CCG article), it has to build a player base from scratch
Still, here are the cards you need for the 'Mew ex Museum' Secret Mission: Mew ex #32 (Four Diamond) Mew ex #77 (Full Art / Two Gold Star) Mew ex #83 (Rainbow / Two Gold Star) Mew ex #86 (Full Gold Art / One Gold Crown) Rewards: 36 Wonder Hourglasses, 12 Pack Hourglasses and 10 Shop Tickets
A cheap, evasive threat that replaces itself and functions offensively and defensively is strong, but the artifact card type makes this appealing to a broad range of decks