mtg play test cards Zyym, Mesmeric Lord [Mystery Booster Playtest Cards] Whenever an opponent pays a tax from a spell or permanent you control Ral's Vanguard · Mystery Booster

Cards like Mental Modulation will help to keep the spell count flowing

If they are holding removal or countermagic you can take that away, see what other options they have and then do your own thing with perfect information and safety

You often find yourself playing against other control decks that have random one- and two-power creatures that look to nickel and dime you while you build up your mana

Holiday bundles, Scene boxes, and Special Edition collector boosters A second printing of LTR dropped in November, containing four new Scene holiday bundles, along with special edition collector booster packs

This is a solid effect in some decks, but so far its been a niche piece in the grander scheme of Magic