Contaminated Ground, Evil Presence, and Tainted Well are cheap ways to gift your opponents Swamps with a little extra card draw or life loss on the side, or use Reef Shaman and Dream Thrush each turn before you attack
Valera Lutfullina Ego Drain | Illustration by Valera Lutfullina Valera Lutfullina MTG Art Catalog Great Magic artists make productive use of tricks of perspective or violations of traditional design sensibilities, but Valera Lutfullina is particularly good at it
What is Outlast
Null Rod is a card that can help against some builds of Workshop, generally by shutting down the large number of mana artifacts the decks employ
Shriekwood DevourerShriekwood Devourer, a 7/5 Treefolk with trample, can go infinite combats with Aggravated AssaultAggravated Assault, assuming the Devourer is attacking, and also assuming it somehow survives every combat
So, if your loved one (or just yourself) plays digitally instead, finding something for that outside the game can be difficult