steal opponents cards mtg Blatant Thievery | Explorers of Ixalan Cards that steal opponents' cards

Overgrown Battlement is a real workhorse for defender decks, taps for absurd amounts of mana once you've got your walls in place, and can produce infinite combos with the right combination of untap effects

The restriction doesnt make Keruga wholly unplayable

The more combat orientated and aggressive you are the better this is in the build at least

Then you can also return two to the battlefield from your graveyard, and as you are churning through your deck discarding them, drawing two cards a pop, you'll easily have enough few to toss two onto the battlefield for free

For a single blue mana, it lets you draw three cards, unparalleled in draw power