whenever you gain life cards mtg Rules Text: "Whenever life", Colors: Black, 35 Serene Steward MTG - Jumpstart

This was the card I sideboarded out the most throughout the tournament

Kitsa has vigilance, prowess, and two abilities - you can tap the otter to draw a card and then discard a card, or you can spend two generic mana and tap it to copy an instant or sorcery spell you control, with the caveat that Kitsa needs three power to do so

What If You Include Digital-Only Cards

Mystical Tether is a very solid white removal spell, and the instant speed mode makes playing against white quite more complicated

First, Walking Ballista needs to have at least two +1/+1 counters on it (by paying four generic to cast it, ideally), and Heliod, the Sun-Crowned needs to be on the battlefield