If the targeted creature is an illegal target when Ulrich, Uncontested Alphas first ability tries to resolve, the ability is countered
card in 2005, and Gressle has kept the card in storage ever since

Adventures in Forgotten Realms Mastery Details Adventures in the Forgotten Realms Set Mastery 27x Adventures in the Forgotten Realms boosters 5 Set Mastery Orbs (each can be redeemed for a card style or sleeve on the Adventures in the Forgotten Realms Mastery Tree) Adventures in the Forgotten Realms Mastery Pass Avatar Ellywick Tumblestrum Cards and Boosters 20x Booster packs (5x AFR, 5x STX, 5x KHM, 5x ZNR) 10x Adventures in the Forgotten Realms mythic rare individual card rewards (ICRs) Level 91+: 1x uncommon ICR Card Sleeves Tiamat card sleeve Ancient Red Dragon exquisite card sleeve Icingdeath, Frost Tyrant card sleeve (obtainable in the Adventures in the Forgotten Realms Mastery Tree) Iymrith, Desert Doom card sleeve (obtainable in the Adventures in the Forgotten Realms Mastery Tree) Ebondeath, Dracolich card sleeve (obtainable in the Adventures in the Forgotten Realms Mastery Tree) Inferno of the Star Mounts card sleeve (obtainable in the Adventures in the Forgotten Realms Mastery Tree) Old Gnawbone card sleeve (obtainable in the Adventures in the Forgotten Realms Mastery Tree) Card Styles 25 Set Mastery Orbs (each can be redeemed for a card style or avatar on the Adventures in the Forgotten Realms Mastery Tree) 15x Common card styles 10x Uncommon card styles Event Tokens 1 Player Draft token (Can be redeemed for either a Premier or Traditional Draft) Gold and Gems 4,000 gold 1,200 gems Pets Red dragon pet Green dragon pet Blue dragon pet White dragon pet How many levels are there in Adventures in the Forgotten Realms Set Mastery

It can also be done at instant speed, letting you activate it during blocks to ensure creatures survive combat and take out what they're blocking
Its an interesting ramp payoff in a deck filled with big creatures
If a monster(s) is Special Summoned to your opponent's field: You can target 1 monster on each field