Illusionary Mask [Limited Edition Alpha] Core Set 2019 Prerelease Promos put a +1/+1 counter on

put a +1/+1 counter on Tireless Tracker

Each player antes the top card of their library

Numsgil did in Blog

that player may gain 2 life

Set: Tempest Type: Enchantment Rarity: Rare Cost: {2}{G}{G} Any player may cast creature spells with converted mana cost 3 or less without paying their mana costs and as though they had flash

Illusionary Mask [Limited Edition Alpha] Core Set 2019 Prerelease Promos put a +1/+1 counter onSet: Limited Edition Alpha Type: Artifact Rarity: Rare Cost: {2} {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2 2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead