+Solidarity (8)
Put a +1/+1 counter on each creature you control.
Enchant creature you control
When Cartouche of Solidarity enters, create a 1/1 white Warrior creature token with vigilance.
Enchanted creature gets +1/+1 and has first strike. (It deals combat damage before creatures without first strike.)
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
Cycling (, Discard this card: Draw a card.)
Creatures you control get +0/+5 until end of turn.
Strive — This spell costs more to cast for each target beyond the first.
Choose any number of target creatures. Double the number of +1/+1 counters on each of them.
, Exert Steward of Solidarity: Create a 1/1 white Warrior creature token with vigilance. (An exerted creature won't untap during your next untap step.)
Choose target creature you control. Put a +1/+1 counter on it for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)
When Trial of Solidarity enters, creatures you control get +2/+1 and gain vigilance until end of turn.
When a Cartouche you control enters, return Trial of Solidarity to its owner's hand.
Gatherer works better in the Companion app!