Despite Betors seemingly steep requirements to do its thing, reaching 10 total toughness is a breeze in a deck full of creatures with inflated toughness
It stays unlocked, and all abilities of the full card are available to you
They exist to help players identify the deck archetypes the set has been designed to support
Then, for four mana, you can tap it to put a shadow (a creature with shadow can only block or be blocked by creatures with shadow) counter on a creature, which becomes a wraith for as long as it has that counter
(Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) Legendary Creature - Advisor Dwarf Surly Badgersaur Whenever you discard a creature card, put a +1/+1 counter on this creature
But, of course, provided you're keeping two or more cards in your hand when on the receiving end of a discard spell, you should always take into account what kind of synergy or play style will emerge from keeping each set of cards